my homework lesson 7 add three digit numbers answer key

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Course: 3rd grade   >   Unit 3

• Using place value to add 3-digit numbers: part 1
• Using place value to add 3-digit numbers: part 2

Adding 3-digit numbers

• Add within 1000

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McGraw Hill Math Grade 3 Chapter 3 Lesson 7 Answer Key Subtracting Two-Digit Numbers

Excel in your academics by accessing McGraw Hill Math Grade 3 Answer Key PDF Chapter 3 Lesson 7 Subtracting Two-Digit Numbers existing for free of cost.

McGraw-Hill Math Grade 3 Answer Key Chapter 3 Lesson 7 Subtracting Two-Digit Numbers

Subtract to find the difference.

Explanation: Difference: 36 – 22 = 14.

Explanation: Difference: 59 – 16 = 43.

Explanation: Difference: 68 – 31 = 37.

Explanation: Difference: 42 – 21 = 21.

Explanation: Difference: 84 – 52 = 32.

Explanation: Difference: 99 – 54 = 45.

Explanation: 75 – 63 = 12.

Explanation: Difference: 50 – 20 = 30.

Explanation: Number of books David read = 14. Number of books Anita read = 36. Number of books Hasan read = 25. Difference between David and Hasan: Number of books Hasan read – Number of books David read = 25 – 14 = 11.

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2ND GRADE THREE-DIGIT NUMBER ADDITION iREADY MATH UNIT 3 LESSON 16

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This pack is a great addition to any Math Curriculum for Second Grade. It offers your students extensive practice understanding three-digit number addition. It includes practice on solving addition equations and word problems with with in 1000. There is practice with open number line, breaking numbers into hundreds, tens and ones, and using the expanded form to add.

This product has 6 posters which helps to explain how to solve equations. There are 32 differentiated worksheets total, 5 are Exit Tickets with answer key.

This is extra practice for iReady Math Second Grade as well as any other 1st and 3rd grade math curriculum. It has sea / ocean animal clip art.

Standards: MAFS.2.NBT.2.7 CC.2.NBT.B.7

This file is an independent product and is not affiliated with, nor has been authorized, sponsored, or otherwise approved by Pearson®, Always Learning®, Scott Foresman®, Pearson Scott Foresman®, or enVisionMath®, Curriculum Associates®

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Big Ideas Math Answers Grade 3 Chapter 7 Round and Estimate Numbers

Big Ideas Math Grade 3 Chapter 7 Round and Estimate Numbers Answers PDF link is available here. Students who have been looking for the solutions of BIM Book Grade 3 Chapter 7 can download the solution key provided in pdf format and begin preparation. This answer key is useful to complete the homework within time. Students can get the answers for every question in BIM Book 3rd Grade 7th Chapter Round and Estimate Numbers in the following sections.

Big Ideas Math Book 3rd Grade Answer Key Chapter 7 Round and Estimate Numbers

BIM Book Grade 3 Chapter 7 Round and Estimate Numbers includes the topics like Place value, Round Numbers Using a Number Line, Round Numbers Using Place Value, Estimate Sums, and Estimate Differences. After preparing these lessons, you will find the performance task section where you can check skills. To become an expert in maths, you need to prepare as per Big Ideas Math Answers Grade 3 Chapter 7 Round and Estimate Numbers.

The solutions provided here are solved by experts in mathematics. So, download Big Ideas Math Book 3rd Grade 7th Chapter Round and Estimate Numbers Answer Key PDF. You can also get the direct links for every lesson in the below sections. Just tap on those links and get the answers easily.

Lesson 1: Place value

Lesson 7.1 Place value

Place value property homework & practice 7.1.

Lesson 2: Round Numbers Using a Number Line

Lesson 7.2 Round Numbers Using a Number Line

Round numbers using a number line homework & practice 7.2.

Lesson 3: Round Numbers Using Place Value

Lesson 7.3 Round Numbers Using Place Value

Round numbers using a place value homework & practice 7.3.

Lesson 4: Estimate Sums

Lesson 7.4 Estimate Sums

Estimate sums homework & practice 7.4.

Lesson 5: Estimate Differences

Lesson 7.5 Estimate Differences

Estimate differences homework & practice 7.5.

Performance Task

Round and Estimate Numbers Performance Task

Round and estimate numbers activity, round and estimate numbers chapter practice.

Answer: 100+30+0=130 300+10+0=310 100+00+3=103 Reasoning Which number is the greatest? How do you know?

Answer: 310 is the greatest number because the number value of the digit in hundreds place is great compared to others numbers i.e 103 and 130.

Think and Grow: Place value

Show and Grow Circle the value of the underlined digit.

Circle the value of the underlined digit.

Write the value of the underlined digit

Question 8. 1 52

The value of the place of the five digit in the number 725. The digit 5 has a place value of one’s because its in the one’s place.

Question 10. 2 o 7

Identify the value of each digit.

Answer: Newton amount spent value= 2 hundred and 2 dollar = $200+ $2=$202 Descartes amount spent value= $220 $202   <    $220 Hence, Descartes spends more money.

Show and Grow

Question 4. Newton spends one hundred forty-two dollars at the pet store. Descartes spends $124. Who spends more money?

Answer: Newton amount spent value= 1 hundred and forty two dollar = $100+ $40+$2=$142 Descartes amount spent value= $124 $142   >    $124 Hence, Newton spends more money.

Question 5. 7 3 6

Question 6. 9 62

Question 7. 89 7

Answer: The three digits numbers are 2,7,5 CONDITIONS : The three digits numbers are 2,7,5 My number is even. My number is less than 750. So, Among three digits 2 is even, the last digit is “2” Out of 7 and 5 digits,5 < 7. so the first digit in my number is 5. The middle digit is going to be 7. Hence,the three-digit my number= 572.

Question 11. Modeling Real Life A skating rink gives out three hundred thirty glow sticks on Friday and 303 glow sticks on Saturday. On which day does the skating rink give out more glow sticks?

Answer: Glow  sticks given on Friday = three hundred thirty =3 x 100+3 x 10=300+30=330 Glow  sticks given on Saturday=303 Comparison:  330 > 303 Hence, the day the skating rink given out more glow sticks is on Friday.

Review & Refresh Complete the related facts

Question 13. 9 ÷ 3 = ____ 3 × ____ = 9

Answer: 9 ÷ 3 = 3 3 × __3__ = 9

Question 14. 40 ÷ 8 = __5___ 8 × ___5_ = 40

Answer: 40 ÷ 8 = __5___ 8 × ___5_ = 40

Question 15. 63 ÷ 7 = __9__ 7 × ___9_ = 63

Answer: 63 ÷ 7 = __9__ 7 × __9___ = 63

Repeated Reasoning Which multiple of ten is closer to 38? 31? 36? How did you decide? Explain.

Question 2. Round 350 to the nearest ten _____.

Apply and Grow: Practice Round the number to the nearest ten and to the nearest hundred/

Question 5. 961 Nearest ten: ______ Nearest hundred: _____

Question 6. 47 Nearest ten: _______ Nearest hundred: _____

Question 8. Use the table above to and on which days the school collects about 80 food items.

Answer: Number of rows of soups=9 Number of columns of soups=9 Total number of cans of soups in all shelf=9 x 9=81 Nearest Ten of 81= 80 Nearest Hundred of 81=100

Round the number to the nearest ten and to the nearest hundred.

39 lies between 0 and 100. So, the Nearest Hundred of 39 is 100.

156 lies in between 100 and 200. So, the Nearest Hundred of 156 is 200. Round the number to the nearest ten and to the nearest hundred.

Question 3. 402 Nearest ten: _____ Nearest hundred: _____

402 lies in between 400 and 500. So, the Nearest Hundred of 402 is 400.

Question 4. 627 Nearest ten: _____ Nearest hundred: ______

627 lies in between 600 and 700. So, the Nearest Hundred of 627 is 600.

Question 5. Writing Explain how to use a number line to round 24 to the nearest ten.

Question 8. 3 × 5 ______

Answer: 3 x 5 = 15

So,15 is odd number.

Question 9. 10 × 8 ______

Answer: 10 x 8 = 80 So, 80 is even number.

Question 10. 7 × 2 _____

Answer: 7 x 2 = 14 So, 14 is even number.

Answer: We can round the number without using the number line by checking if it is less than 5, then the digit in the place you are rounding decreases by 1. If it is 5 or greater, then the digit in the place you are rounding increases by 1 .

Show and Grow Round the number to the nearest ten.

Question 1. 41 _____

Question 2. 85 _____

Question 3. 153 _____

Question 4. 749 _____

Question 5. 372 ______

Question 6. 94 _____

Apply and Grow: Practice Round the number to the nearest ten.

Question 7. 17 ____

Question 8. 52 _____

Question 9. 79 _____

Question 10. 673 _____

Question 11. 521 ____

Question 12. 208 ___

Question 13. 161 ____

Question 14. 738 _____

Question 15. 504 ____

Question 16. 50 ____

Question 17. 22 ____

Question 18. 999 _____

Round the number to the nearest ten to the nearest hundred.

Question 19. 836 Nearest ten: ______ Nearest hundred: ____

Question 20. 945 Nearest ten: ______ Nearest hundred: ____

Nearest Ten of 945 is 950.

Question 21. 72 Nearest ten: ______ Nearest hundred: ____

Question 22. Number Sense Newton rounds 587 to 590. To what place does he round?

Question 24. Use the table above to find on which days about 940 people attend the concert. Explain.

Answer: About  940 people attend the concert on Friday and Sunday because in these days the people count is about n above 940. DIG DEEPER! Round the time to the nearest ten minutes.

Answer: The nearest Ten minutes of 7:23 is 7:20.

Answer: The nearest Ten minutes of 3:05 is 3:10.

Question 27. Explain how using place value to round is similar to using a number line to round.

Answer: In math, every digit in a number has a place value. Place value can be defined as the value represented by a digit in a number on the basis of its position in the number. A  number line  is a line on which numbers are placed in intervals, to show basic numerical calculations. Using place value to round is similar to using a number line to round is THE SAME. If we’re rounding the number 111 to the nearest ten, it’s between 110 and 120 on the number line, and it’s closer to 110. Furthermore, the process is the same when we’re rounding to the nearest hundred–only now we’re asking which two multiples of 100 the number falls between.

Round the number to the nearest ten

Question 1. 29 _____

Question 2. 564 _____

Question 3. 843 ____

Question 4. 281 ____

Question 5. 36 ____

Question 6. 975 ____

Question 7. 152 Nearest ten: ______ Nearest hundred: ____

Question 8. 308 Nearest ten: Nearest hundred: ____

Question 9. 45 Nearest ten: ______ Nearest hundred: ____

Question 10. What is the least number that rounds to 20 when rounded to the nearest ten? What is the greatest number? Least: ____ Greatest: ____

Question 11. DIG DEEPER! Number Sense A three-digit number has the digits 3, 5, and 6.It rounds to 700 when rounded to the nearest hundred. What is the number? Explain.

Question 12. YOU BE THE TEACHER Descartes says that a number rounded to the nearest ten can be greater than the same number rounded to the nearest hundred. Is Descartes correct? Explain.

Answer: Descartes says that a number rounded to the Nearest Ten can be greater than the same number rounded to the Nearest Hundred is correct. For Example: Estimate the sum 1,472 + 398 + 772 + 164 by rounding each number to the nearest hundred.

1,472….1,500

Total amount rounded to hundred:2900

In the example above, the exact sum is 2,806. Note how close this is to the estimate, which is 94 greater. Estimate the sum 1,472 + 398 + 772 + 164 by first rounding each number to the nearest ten.

1,472….1,470

398…….. 400

772………770

164………160

Total amount rounded to tens place is 2,800.

Note that the estimate is 2,800, which is only 6 less than the actual sum of 2,806.

Answer: Months about 450 people at the basketball courts are July and August because in these months only courts count is about and above 450.

DIG DEEPER! Round the time to the nearest ten minutes.

Answer: Nearest Ten Minutes of 5:48 is 5:50.

Answer: Nearest Ten Minutes of 2:35 is 2:40.

Review & Refresh Find the product

Answer: 9 X 0=0.

Answer: 10 X 9= 90.

Answer: 9 X 3= 27.

Answer: 6 X 9= 54.

Answer: 83 rounded=80                                                       156 rounded=200 119 rounded=120                                                   103 rounded= 100 Sum =120+80=200                                             Sum= 200+100= 300

Construct Arguments Compare your answers to your partner’s answers. Explain why they are the same or why they are different.

Answer: The answers are different because the numbers are given to me and my partner are completely different.

ONE WAY: Rounding system 258 rounded nearest hundred: 300 631 rounded nearest hundred: 600 Total Rounded Nearest Hundred of 258 and 631=900 OTHER WAY:  Use Compatible number Compatible number of 258=250 Compatible number of 631= 625 Total Sum of Compatible number of  258 and 631= 250+625= 875

Use compatible numbers to estimate the sum.

Answer: 71 Compatible Number= 75 22 Compatible Number=  20 Total Sum of  Compatible Number of 71 and 22= 75+20=95.

Answer: 353 Compatible Number= 355 142 Compatible Number= 140 Total Sum of Compatible Number of 353 and 142=  355+140= 495.

Apply and Grow: Practice Round to the nearest ten to estimate the sum.

Answer: Compatible Number of 222= 225 Compatible Number of 678= 670 Total Sum of Compatible Number of 222 and 678= 225+670=895.

Answer: Compatible Number of 491= 495 Compatible Number of 407= 465 Total Sum of Compatible Number of 491 and 407= 495+465=960.

Answer: Compatible Number of 347= 350 Compatible Number of 52= 45 Total Sum of Compatible Number of 347 and 52= 395.

Estimate the sum.

Question 14. 326 + 472 __ + ___ = ____

Answer: Sum of 326 + 472 = 798.

Question 15. 205 + 101 ____ + ____ = _____

Answer: Sum of 205 + 101 = 306.

Question 16. 58 + 24 ____ + ____ = ____

Answer: Sum of 58 +24 = 82.

Question 17. Structure Estimate the sum of 324 + 277 two different ways.

Question 18. Use the map above. An airplane flies from Dallas to Saint Louis, and then flies from Saint Louis to Nashville. About how many miles does the airplane fly in all?

Answer: Miles covered by the airplane from Dallas to Saint Louis= 547 miles Miles covered by the airplane from Saint Louis to Nashville= 253 miles Total Number of miles the airplane flew in all= 547 miles+253 miles= 800 miles.

Question 19. There are 178 third-grade students, 239 fourth-grade students, and 309 fifth-grade students at a museum. About how many students are at the museum? Explain. Is there another way you can estimate to solve the problem? Explain.

Answer: Number of third-grade students at a museum=178 Number of fourth-grade students at a museum=239 Number of fifth-grade students at a museum=309 Total Number of students at a museum=178+239+309=726. No, there is no other way to estimate the solution except addition.

Round to the nearest ten to estimate the sum.

Answer: Compatible Number of 26= 30 Compatible Number of 51= 55 Total Sum of Compatible Number of 26 and 51 = 30+55 = 85.

Answer: Compatible Number of 454= 465 Compatible Number of 448= 455 Total Sum of Compatible Number of 454 and 448 = 465+455 = 910.

Answer: Compatible Number of 177= 185 Compatible Number of 522= 530 Total Sum of Compatible Number of 177 and 552 =185+530 = 715.

Estimate the sum

Question 10. 621 + 314 ____ + ____ = ____

Answer: Sum of 621 + 314 = 935.

Question 11. 105 + 82 ____ + ____ = _____

Answer: Sum of 105 + 82 =187.

Question 12. 228 + 276 ____ + ____ = _____

Answer: Sum of 228 + 276 = 504.

Answer: Actual Sum of 486 + 379 = 486 + 379 = 865 Estimated Sum of 486 + 379 =500 + 400 = 900 Comparison:   865 >  900 Hence, the Actual Sum is lesser than the Estimated Sum because the estimated value is the value roughly calculated whereas the actual sum is the correct and accurate value.

Question 14. Logic Newton has $25. Descartes has $32. Do they have more than $50 in all? Use estimates to explain.

Answer: Amount Newtons having= $ 25 Estimated value of $25= $ 30 Amount Descartes having = $32 Estimated value of $32 = $35 Total  Estimated Sum Newtons and Descartes having= $ 30 + $35 = $65.

Question 16. Modeling Real Life A beach hut owner sells 118 towels, 121 surfboards, and 162 bathing suits. About how many items does the owner sell? Explain.

Answer: Number of towels the owner sells= 118 Number of surfboards the owner sells= 121 Number of bathing suits the owner sells= 162 Total number of items the owner sells= 118 towels + 121 surfboards +162 bathing suits = 401. Review & Refresh Compare

Answer: One way: Rounding numbers Nearest ten of 673= 670 Nearest ten of 429= 430 Difference of Nearest ten of 673 and 429= 670 – 430 = 240. Another Way: Use compatible numbers. Compatible number of 673 =675 Compatible number of 429=425 Difference of Compatible number of 673 and 429= 675 – 425 = 250. Show and Grow

Answer: Compatible number of 95=100 Compatible number of 26= 25 Difference of Compatible Number of 95 and 26= 100 – 25 = 75.

Answer: Compatible number of 768=775 Compatible number of 273= 270 Difference of Compatible Number of 768 and 273= 775 – 270 = 505. Apply and Grow: Practice Round to the nearest ten to estimate the difference.

Nearest Ten of 556=560.

Nearest Hundred of 305 = 300 Difference of  Nearest Hundred of 901 and 305= 900 – 300 = 600.

Answer: Compatible Number of 985= 990 Compatible Number of 148=  145 Difference of Compatible Number of 985 and 148= 990 – 145 = 845.

Answer: Compatible Number of 676= 680 Compatible Number of 226= 255 Difference of Compatible Number of 676 and 226 = 680 – 255 = 455.

Answer: Compatible Number of 549= 550 Compatible Number of 52=  45 Difference of Compatible Number of 549 and 52 = 550 – 45 = 505. Estimate the difference

Question 14. 455 – 221 ____ – ____ = _____

Answer: Difference of 455 – 221 = 234.

Question 15. 674 – 348 ____ – ____ = ____

Answer: Difference of 674 – 348 =  326.

Question 16. 97 – 53 ____ – _____ – _____

Answer: Difference of 97 – 53 = 44.

Question 17. DIG DEEPER! Write a subtraction problem using 2 three-digit numbers that have an estimated difference of 200.

Answer: A Fruit seller has 469 mangoes with him on Monday. On Tuesday he finds 269 mangoes got rotten. How many are left out with him on Tuesday?

Answer: Number of days Mars to orbit the sun= 687 days Number of days Venus to orbit the sun= 225 days

Number of more days it takes Mars to orbit the Sun than Venus= 687 – 225 = 462 days.

Question 19. Use the diagram above to find about how many more days it takes Earth to orbit the Sun than Mercury.

Answer: Number of days Earth to orbit the sun = 365 days Number of days Mercury to orbit the sun = 88 days Number of more days it takes Earth to orbit the Sun than Mercury= 365 – 88 = 277 days.

Question 20. Your school gym can seat 500 people on one side and 350 people on the other side. There are 459 people in their seats. About how many more people can be seated in the gym?

Answer: Number of people seating on one side in the gym = 500 Number of people seating on other side in the gym = 350 Total number of seats in the gym = 500 + 350 = 850 Number of people occupied in the seats in the gym = 459 Number of more people can be seated in the gym = total seats – seats occupied = 850 – 459 =  391 seats.

Question 21. A bus is traveling 876 miles from Raleigh to New Orleans. The bus travels 264 miles in the morning and 327 miles in the afternoon. About how many more miles does the bus have left to travel? Explain.

Answer: The distance the bus traveled from Raleigh to New Orleans = 876 miles The distance the bus traveled in the morning = 264 miles The distance the bus traveled in the afternoon = 327 miles Total distance covered by the bus in the morning and afternoon= 264 miles+ 327 miles = 591 miles The number of more miles the bus has left to travel = 876 miles – 591 miles = 285 miles.

Round to the nearest ten to estimate the difference.

Answer: Compatible Number of 96 = 100 Compatible Number of 47 = 45 Difference of Compatible Number of 96 and 47= 100 – 45 = 65.

Answer: Compatible Number of 678 = 685 Compatible Number of 142 = 135 Difference of Compatible Number of 678 and 142 = 685 – 135 = 550.

Answer: Compatible Number of 746 = 755 Compatible Number of 51 = 45 Difference of Compatible Number of 746 and 51 = 755 – 45 = 715. Estimate the difference. Question 10. 258 – 205 ___ – ____ = ____

Answer: Difference of 258 – 205 = 53.

Question 11. 781 – 62 ____ – ____ = ____

Answer: Difference of 781 – 62 = 719.

Question 12. 914 – 522 ____ – ____ = ____

Answer: Difference of 914 – 522 = 392.

Question 14. Structure Estimate the difference of 581 – 213 in two different ways.

Answer: ONE WAY: Rounding System Nearest Hundred of 581= 600 Nearest Hundred of 213= 200 The difference of Nearest Hundred of 581 and 213= 600 – 200 = 400. OTHER WAY: Use Compatible Numbers Compatible Number of 581= 575 Compatible Numbers of 213 = 220 Difference of Compatible Numbers of 581 and 213= 575 – 220 =  355.

Answer: Number of tickets sold for school play= 259 Number of people arrived for the play = 103 Number of people expected to arrive still = 259 – 103 = 156.

Question 16. Modeling Real Life Construction workers are building an 800-foot tall building. They complete 76 feet one month and 195 feet the next month. About how many more feet do they have left to build?

Answer: The total length of the foot ball building = 800 feet Number of feet workers completed in one month =76 feet Number of feet workers completed in next month = 195 feet Construction left out to build = Total -Completed work in one month – Completed work in next month =800 – 76 – 195 = 529 feet.

Review & Refresh

Answer: Given: Length of Rectangle= 10 m Breath of Rectangle= 2 m Area of Rectangle= Length x Breath = 10 m X 2 m = 20 square metres.

Difference of photos taken on Saturday than on Sunday by the photographer= 221 – 91 = 130. b) Photos taken on Thursday by the photographer = 157 Photos taken on Friday by the photographer = 104 Photos taken on Saturday by the photographer = 221 Photos taken on Sunday by the photographer = 91

7.1 Place Value Circle the value of the underlined digit.

Question 5. 725 Nearest ten: ____ Nearest hundred: _____

Question 6. 34 Nearest ten: ______ Nearest hundred: ______

Question 7. 247 Nearest ten: ____ Nearest hundred: _____

Question 8. 571 Nearest ten: ____ Nearest hundred: _____

Question 9. 86 Nearest ten: ____ Nearest hundred: _____

Question 4. Number Sense Descartes rounds 742 to 700. To what place does he round?

Question 11. 33 + 59 ___ + ____ = ___

Answer: Sum of 33 + 59 = 92.

Question 12. 124 + 477 ____ + ____ = ____

Answer: Sum of  124 + 477 = 601.

Question 13. 122 + 181 ____ + ____ = ____

Answer: Sum of 122 + 181 = 303. 7.5 Estimate Differences Estimate the difference

Question 14. 692 – 71 ___ – ____ = _____

Answer: Difference of 692 – 71 = 621

Question 15. 478 – 152 ____ – ____ = ____

Answer: Difference of 478 – 152 = 326.

Question 16. 537 – 409 ____ – ____ = _____

Answer: Difference of 537 – 409 = 128.

Answer: Length of killer whale = 312 inches Length of striped dolphin = 102 inches The difference in Length of the killer whales and striped dolphin = 312 inches – 102 inches = 210 inches.

Final Words: The answers seen in this chapter are as per the latest edition. The Big Ideas Math Solutions are prepared by math experts so you don’t worry about the answers. I hope the details provided in Big Ideas Math Answers Grade 3 Chapter 7 Round and Estimate Numbers made you happy. Please share answers pdf with your friends and help them to overcome the difficulties of solving questions. Stay in touch with us to get answer keys for more chapters of grade 3.

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McGraw Hill My Math Grade 4 Chapter 4 Lesson 9 Answer Key Multiply by a Multi-Digit Number

All the solutions provided in McGraw Hill Math Grade 4 Answer Key PDF Chapter 4 Lesson 9 Multiply by a Multi-Digit Number  will give you a clear idea of the concepts.

McGraw-Hill My Math Grade 4 Answer Key Chapter 4 Lesson 9 Multiply by a Multi-Digit Number

Math in My World

Check for Reasonableness The product, ____, is close to the estimate, ____

Example 2 Find 3 × $1,175.

Answer: Estimate is helpful to the reasonableness of the answer. To estimate first we round up the multiplier and the multiplicand to the nearest tens ones and hundreds and so on. then multiply the rounded numbers.

Guided Practice

Multiply. Check for reasonableness.

Independent Practice

Algebra Find each unknown number.

Question 11. 8 × 7,338 = x x = ____ Answer: Multiplication of 8 with 7,338 then you get 58,704. 8 × 7,338 = 58,704. x = 58,704. Therefore the unknown is 58,704.

Question 12. 7 × 8,469 = y y = ____ Answer: Multiplication of 7 with 8,469 then you get 59,283. 7 × 8,469 = 59,283. y = 59,283. Therefore the unknown is 59,283.

Question 13. 9 × $9,927 = t t = ____ Answer: Multiplication of 9 with $9,927 then you get $89,343. 9 × $9,927 = $89,343. t = $89,343. Therefore the unknown is $89,343.

Question 14. 9 × 8,586 = u u = ____ Answer: Multiplication of 9 with 8,586 then you get 77,274. 9 × 8,586 = 77274. u = 77,274. Therefore the unknown is 77,274.

Algebra Find each produd if n = 8 .

Question 15. n × 295 = ___ Answer: Given that is n x 295 n = 8. Substitute n value in equation. Multiplication of 8 with 295 then you get 2360. 8 x 295 = 2360.

Question 16. 737 × n = ___ Answer: Given that is 737 x n n = 8. Substitute n value in equation. Multiplication of 737 with 8 then you get 5896. 737 x 8 = 5896.

Question 17. n × $2,735 = ____ Answer: Given that is n × $2,735 n = 8. Substitute n value in equation. Multiplication of 8 with $2,735 then you get $21880. 8 × $2,735 = $21880.

Compare. Use >, <, or =.

Problem Solving

Question 21. On average, 1,668 gallons of water are used daily by each person in the United States. How much water is used by one person in a week? Answer: Given that, On average, 1,668 gallons of water are used daily by each person in the United States. 1 week = 7 days. Water used in one week is 7 x 1,668 = 11,676. Therefore 11,676 gallons of water used by one person in a week.

Question 22. Each set of furniture costs $2,419 How much would it cost to buy 5 sets of furniture? Answer: Given that, Each set of furniture costs $2,419. The cost for 5 sets of furniture is 5 x $2,419 = $12,095. Therefore the cost of 5 sets of furniture is $12,095.

HOT Problems

Question 24. Mathematical PRACTICE 7 Identify Structure Write a four-digit number and a one-digit number whose product is greater than 6,000 and less than 6,200. Answer: The four digit number is 3,001. The one digit number is 2. 3001  x 2 = 6002. Therefore 6002 is greater than 6000 and less than 6200.

Question 25. ? Building on the Essential Question How is multiplying by multi-digit numbers similar to multiplying by two-digit numbers? Answer: We use the same model for the multi digit numbers and two digit numbers. For both numbers we multiply from the right side of a number. Example for two digit number 2 x 12 = 24. for multi digit numbers 2 x 123 = 246.

McGraw Hill My Math Grade 4 Chapter 4 Lesson 9 My Homework Answer Key

Algebra Find each product.

Question 7. n = 8 n × $685 = ____ Answer: Given that is n x $685 n = 8. Substitute n value in above equation. 8 x $685 = $5,480. Multiplication of 8 with $685 then you get $5,480.

Question 8. n = 3 n × 5,266 = ____ Answer: Given that is n x 5,266. n = 3. Substitute n value in above equation. 3 x 5,266 = 15,798 Multiplication of 3 with 5,266 then you get 15,798.

Question 9. Mathematical PRACTICE 2 Use Number Sense One shelf in the greenhouse holds 467 plants. How many plants can 6 shelves hold? Answer: Given that, One shelf in the greenhouse holds 467 plants. Number of shelves are 6. The number of plants in 6 shelves is 467 x 6 = 2,802. Therefore there are 2,802 plants in 6 shelves.

Question 10. Samantha’s parents bought her a new bed. They paid $136 each month for 9 months. How much did the bed cost? Answer: Given that, They paid $136 each month for 9 months. So, $136 x 9 = $1,224. Therefore Samantha’s parents paid to the bed is $1,224

Question 11. A concert hall seats 7,689 people. There were 8 concerts in June, and a ticket was sold for every seat. How many tickets were sold in June? Answer: Given that, A concert hall seats 7,689 people. There were 8 concerts in June. A ticket was sold for every seat. The number of tickets in June are 7,689 x 8 = 61,512. Therefore 61,512 tickets are sold in June.

Test Practice

Question 12. Find the product n × 2,019 if n = 5. A. 10,000 B. 10,055 C. 10,095 D. 10,545 Answer: Given that, n x 2,019 n = 5. Substitute n = 5 in equation. 5 x 2019 = 10,095. Option C is the correct answer.

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