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Multiplication Without Decimals

100

7 x 9 = 

63

200

12 x 6 = 

72

300

17 x 58 = 

986

400

14 x 28 = 

392

500

3,747 x 6 = 

22,482

Multiplication with decimals

100

3 x 0.4 = 

1.2

200

5.9 x 3 = 

17.7

300

5.7 x 8.1 = 

46.17

400

Find the answer of 4 x 0.4 by using repeated addition, and explain how this helped you find the same product. 

0.4 + 0.4 + 0.4 + 0.4 is the same as 4 x 0.4 Because multiplying is the same as adding the number that many times. 

500

4 x 0.2 is the same as which of the following?

a. 0.2 x 0.2 x 0.2 x 0.2

b. 4 x 2 x 0.1

c. 4 x 2

d. 4 x 2 x 0.1 x 10

B. Solve each one. 

Powers of ten/Multiplication

100

300 x 50 = 

15,000

200

45.6 x 100

4,660

300

30 x 0.1

3

400

Write the Repeated Multiplication and Value for the following:

10⁴

10 x 10 x 10 x 10 = 10,000

500

Write the expressions for least to greatest. 

4 x 30  

3 x 0.04 

400 x 30

40 x 0.03

3 x 0.04 = 0.12

40 x 0.03 = 1.2 

4 x 30 = 120

400 x 30 = 12,000

Real World Problems

100

Mrs. Kirkland needs to know the area of the crib for Baby JJ so she can buy the right amount of bedding. The cage floor is 53 x 24 inches. What is the area of the cage floor? SHOW YOUR WORK!

1,272 inches

200

Peighton is preparing for a race for next year. He wants to run 12 miles each month. He wants to have at least 125 miles ran in 9 months. Will Peighton run enough miles to reach his goal? Explain your answer. 

No, 12 x 9 = 108 miles. Since that number is less than 125, that means he will not run enough miles to reach his goal. 

300

Troy went to the movies. He bought sodas. He bought 4 sodas. Each soda was 6.8 ounces when it was full. How much soda did he have? 

6.8 x 4 = 27.2 ounces

400

Nyapouke went to a movie. It was 156 minutes long. Elizabeth went to a movie that was .39 times as long as Nyapouke's movie. Was Nyapouke's movie loner? Explain how you know without finding the actual length of the movie. 

Nyapouke's movie was longer because when you multiply by an amount less than one, you will get a product less than 156.

500

Mr. Kirkland was studying for his dental school finals. He studied for his last test 55 minutes for 14 days. How long did he study for his test? 

770 Minutes

Bonus - Can you do it?

100

What is the product of 6.4 x 10?

64

200

10 x 10 x 10 x 10 x 10 x 10 in Exponential form and the value. 

Exponential form = 

Value = 

Exponential form = 10⁶

Value = 1,000,000

300

9,421 x 4 = 

9,421 x 4 = 37,684

400

0.3 x 0.02 = 

A. 3 x 2 x 0.1 x 0.01 = 

B. 3 x 2 

C. 3 x 3 

D. 3 x 2 x 0.1 x 0.1

0.3 x 0.02 = 0.006

A. 3 x 2 = 6

    6 x 0.1 = .6

   .6 x 0.01 = 0.006

500

Order the Products from Least to Greatest:

5 x 0.2

50 x 2

500 x 20

20 x 0.05

400 x 5

2 x 0.05 =0.1

5 x 0.2 = 1

50 x 2 =100

400 x 5 = 2,000

500 x 20 = 10,000