Unit 3 Modeling and Understanding Multiplication of Decimals

by May Voltz

| 9 QuestionsNote from the author:

Modeling multiplication of decimals and solving word problems using decimals.

Use this image for questions 1 -3.

1

1

What multiplication question is represented in the image above?

2.3 x 2.1

2.3 x 1.1

203 x 103

106 x 104.3

2

1

Label your diagram. How many wholes? Tenths? Hundredths?

3

1

What is the value of the image above?

Use this App to model and solve questions 4 - 5.

4

1

Using the app submit a screen shot of your model including a solution neatly labled.

1.4 x 2.4

5

1

Using the app submit a screen shot of your model including a solution neatly labled.

3.2 x 1.5

Multiple Choice Section

6

1

Jackson works at a factory that makes steel wire. The factory makes 2.3 yards of wire every minute. How many yards of steel wire will the factory make in 3.1 minutes?

5.4 minutes

5.4 yards

0.7 yards

0.7 minutes

7.13 minutes

7.13 yards

7 yards and 13 inches of wire

7

1

A football coach puts 1.2 liters of gatorade in each of 8 bottles. How much gatorade is there in total?

9.2 liters

7.8 liters

9.6 liters

8.2 liters

8

1

Jonathon earns $9.50 for washing cars at a local car wash. Yesterday he worked 3.5 hours. How much money did Jonathon earn yesterday?

$13.00

$12.50

$33.25

$332.50

9

1

Mrs. Girushi is purchasing 2.25 pounds of meat that costs $2.80 per pound. How much change should Mrs. Girushi receive if she gives the cashier $20.00?

$6.30

$13.70

$14.95

$2.52

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