Grade 5: Multiplication of Whole Numbers = =

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1 5.3.1 Name Grade 5: Multiplication of Whole Numbers 1. Write in expanded form and word form = = 2. Mary wanted to know about how much money she would need to buy 8 boxes of crayons at $15.95 per box. Which math strategy should she use? A. Look for a pattern B. Make an organized list C. Estimation D. Work backward 3. Circle the action that takes place when you multiply. A) Combine equal groups B) Share equally 4. What is the value of a in the equation 3a = 15? a = 5. What does stand for? Solve: 6 8 =

2 6. Kim bought 2 loaves of bread for $1.35 each and 3 pounds of ham for $2.45 a pound. Which number sentence can you use to find out how much the food costs? A. ($ $1.35) x (2 + 3) B. (3 x $2.45) x $1.35 C. (2 x $1.35) + (3 x $2.45) D. ($ ) x $ Solve. A. 60 x 5 = B. 25 x 10 = C. 400 x 4 = D. 250 x 10 = 8. Solve the expressions for n = 8 3 x n = n x n = 42 n = 9. Estimate the products. 78 x 4 5 x 27

3 5.3.2 Name Grade 5: Multiplication of Whole Numbers 1. Write the greatest 7 digit whole number. You may not repeat a digit. 2. A classroom has 8 rows with 6 seats in each. How many seats are in the classroom? Show your work. 3. Solve. Show your work. 4,272 x 4 4. Solve for n. 8 x (n + 5) = n = = is an example of which property below? A. Commutative property B. Associative property 6. A video store charges $4.40 for new movies and $2.50 for children s movies. If you rent 3 new movies and 2 children s movies, how much will you pay? Write an equation and solve.

4 Solve. Use mental math. 985 x 10 = 3 x 3 x 10 = 725 x 100 = 651 x 100 = 8. If n equals the number of packages and there are 6 balloons in each package, how many balloons are there in each of the following? Write an equation and solve. n = 4 n = 10 n = 7 9. Estimate the products. 8 x 36= 88 x 3 =

5 5.3.3 Name Grade 5: Multiplication of Whole Numbers 1. Write in standard form: three hundred twenty-four million, seven hundred eight thousand, sixty-three. 2. Solve. Show your work. 625 x 22 = 3. What is the value of 36 x 1,000? 4. There are five pieces of gum in one pack. How many pieces are there in seven packs? Write an equation using a variable and solve. 5. Label each example with one of the correct properties: associative, commutative, or distributive. A. 3 x (2 + 4) = (3 x 2) + (3 x 4) B. 6 x 7 = 7 x 6 C. (5 + 2) + 3 = 5 + (2 + 3) 6. Kim bought 3 shirts for $29.95 apiece from a catalog. She also bought 3 sweaters for $45.50 apiece. What was the cost of her order? Write an equation and solve.

6 7. List the first eight multiples of 3 and 4. Circle the common multiples. Write the least common multiple (L.C.M). 3 4 L.C.M. = What is the variable in n x 7? n= 9. Estimate then solve x 5 4

7 Name Grade 5: Multiplication of Whole Numbers 1. Write each number using exponents: 1000 = 100 = 2. A pencil is 6 inches long. If 4 pencils of this size were laid end-to-end, how far would they stretch? 3. Solve 6,987 x 10? 4. Use the equation below to solve for c. c = 6 x 12 x 5 = 6 x c x Circle which of the following properties is represented by the equation. 5 x (7 x 6) = (5 x 7) + (5 x 6) A. Associative property B. Commutative property C. Distributive property 6. At the school carnival Maria sold necklaces for $2.25 each and Tina sold bracelets for $1.75 each. Twenty-four people bought bracelets and seventeen bought necklaces. How much money did Tina make by selling bracelets? Solve and show your work.

8 Circle the multiples of Jason spent 3 times as many minutes on his homework as Michael did. Michael did homework for 15 minutes. How much time did Jason spend doing homework? Write an expression with a variable. Solve it. 9. Estimate the products. 25 x 97= 39 x 52=

9 5.3.5 Name Grade 5: Multiplication of Whole Numbers 1. What is the value of 7 3? 2. Solve and show your work. 379 x 8 = 3. Solve and show your work. 746 x There are 7 hair clips in a package. How many clips are in four packages? Write an equation and solve. 5. If c = 3, solve the following problem. 41 c = 6. Select the number sentence that represents the solution to the following story problem: Joey goes to the store and buys 3 loaves of bread for $1.26 each and hands the clerk a $10 bill. How much change should Joey get back? A) $ $ $3.00 = B) $ (3 x $1.26) = C) $ $ $3.00 =

10 List the first eight multiples. Circle the common multiples. Give the least common multiple. 2 3 L.C.M. = 8. Write the variable for the following expression: 38 x a. Variable is 9. Estimate the products. A. 296 x 72 = B. 101 x 47=

11 5.3.6 Name Grade 5: Multiplication of Whole Numbers 1. Write the number using exponents: 1,000= 2. Solve. Show your work. 124 x 7 = 3. What is the value of 783 x 100? 4. Write the product. 5 x 36 x 2 = 5 x 2 x 36 = 5. Find the product using the distributive property. 4 x 23 = (4 x 20) + (4 x ) = + = 6. Sandwiches at the deli cost $4.25, a salad $2.38, and a glass of juice is $1.75. What would be the cost of 4 sandwiches and 3 glasses of juice? Write an equation and solve.

12 What does L.C.M. stand for? Explain what it means. 8. Solve for n. A) n * 8 = 56 n = B) 9 * 7 = n n = C) 8 * n = 72 n = D) 10 * n = 40 n = 9. The fifth grade collected 25 checks for the book sale. Each check was written for $ How much was collected?

13 5.3.7 Name Grade 5: Multiplication of Whole Numbers 1. In the expression, 7 3, the exponent is and the base is. 2. Estimate then solve. Show your work. 508 x 97 A. Estimate: B. Solution 3. Solve. Show your work. 364 x Solve for z. 5 x (4 + 6) = z + 30 z = 5. Match the number sentence with the property. Use associative or commutative. A. 12 * (6 3) = (12 6) 3 B. 47 x 6 = 6 x You mailed pictures to your relatives. You need four $.37 stamps. How much will the stamps cost?

14 Find the LCM of each pair. A. 2 and 3 B. 6 and 5 8. Write an expression for each person s age. M = Mary s age in years. A. Jay is 2 years older than Mary. B. Rob is 3 years younger than Mary. C. Sam is three times as old as Mary. 9. Which is the closest estimate for the problem below? 633 x 7 A. 420 B. 4,200 C. 42,000 D. 420,000

15 5.3.8 Name Grade 5: Multiplication of Whole Numbers is read as 10 to the rd P. Solve = or 2. Solve: 823 x 9 = 3. Solve: 675 * 26 = 4. You can buy one ticket to the Star Show for $4.25. How much will four tickets cost? Show your work. 5. Write an example of these properties. Commutative Associative

16 Cindy baby-sits 45 hours a week during the summer. How many hours will she work in 12 weeks? 7. Find the LCM of each pair. A) 2 and 7 LCM= B) 4 and 3 LCM= 8. Complete the following table n x n 9. Solve and show your work: 853 x 32 =

17 5.3.9 Name Grade 5: Multiplication of Whole Numbers 1. Write 6 x 6 x 6 as an exponent. 2. Approximately how many seats in an auditorium that has 29 rows of 21 seats? Show your work. 3. Juan stacked 36 piles of books in the library. Each pile had 14 books. How many books did Juan stack? Show your work. 4. Solve: 268 x 0 = 5. Use the distributive property to solve: 597 x 6 = ( 6 x ) + ( 6 x ) + ( 6 x ) = + + = 6. A package contains 48 cookies. How many cookies will be in 15 packages? Show your work.

18 Find the LCM of each pair. What did you notice? A) 4 and 6 LCM = B) 6 and 10 LCM = 8. Evaluate the expression. 18 x n = if n = Which numbers are factors? 64 x 9 576

19 Name Grade 5: Multiplication of Whole Numbers 1. Solve. A) 3 2 = B) 4 3 = C) 6 3 = D) 8 2 = 2. Solve: 800 x 30 = 3. Complete the table and give the rule. Rule: In Out Solve and show your work. 329 x 68 = 5. Chris has 12 cards. Elaine has 3 times as many cards as Chris. Then she buys 24 more cards. Which number sentence below can be used to find out how many cards Elaine has? A) 3 x = B) = C) 24 x = D) x 3 =

20 6. What is the first number in this pattern?, 8, 12, 16, 20. What is the rule? Evaluate the expression. 6 x n = if n = 4 8. Which number is the product? A) B) x 4 C) 9 4 8

21 Name Grade 5: Multiplication of Whole Numbers 1. Write as exponents and solve. A) 5 * 5 * 5 = = B) 4 x 4 = = C) 7 x 7 = = D) 4 * 4 * 4= = 2. Estimate: 19 x 41 = 3. Find the product of 328 and 23. Show your work. 4. Complete the table and give the rule. Rule: In Out Solve 27 * 50.

22 Sam walks 3 miles one way to the park. How many miles will he walk if he makes five round trips between home and the park? Solve and show your work. 7. Give the next numeral in the pattern and give the rule. 1, 3, 2, 4, 3, 5, 4, Rule: 8. Solve. 227 x 50 = 9. Find the product of 503 and 34. Show your work.

23 Name Grade 5: Multiplication of Whole Numbers 1. Write 1,493,057 in expanded form. 2. Estimate: 318 = x 42 = x = 3. If 9 x 4 = a x 6? a = 4. Write true or false for each equation below. Explain. 914 x 1 = 1 64 x 3 = 3 x 64 (3 + 8) + 7 = 3 + (8 + 7) 5. Mark has 14 dollars. He gets $5 a week allowance. How many weeks will it take for him to save for a video game that costs $64? Show your work.

24 Find the LCM of each pair. 6 and 9 3 and 8 7. Write an expression for each person s age in years. Let d = Danny s age. A) Tom is 2 years older than Danny. B) Mary is 3 years younger than Danny. 8. Find the product of 92 and 67. Show your work.