Multiplying Whole Numbers with Decimals

Representations

What multiplication expression does the model show?

• 5 × 0.4

• 5 × 0.6

• 16 × 0.05

• 5 × 0.16

Display

Which equation matches the model?

• 4 × 0.31 = 1.24

• 4 × 0.31 = 1.51

• 4 × 0.39 = 1.24

• 4 × 0.39 = 1.56

Multi-Step Use Diagrams

Use a quick picture to multiply 3 × 0.16.

Then multiply the result by 3 again. What is the final product?

• 0.32

• 0.48

• 1.44

• 1.24

Jared has a parakeet that weighs 1.44 ounces. Susie has a Senegal parrot that weighs 3 times as much as Jared’s parakeet. How many ounces does Susie’s parrot weigh?

• 0.32 ounce

• 43.2 ounces

• 4.32 ounces

• 0.43 ounce

Use the decimal model to find the product.

1. 4 × 0.07 =

Use the decimal model to find the product.

3 × 0.21 =

Use the decimal model to find the product.

4 × 0.13 =

Find the product.

3 × 0.38 =

Find the product.

2 × 0.41 =

Lars walks his dog 4 times farther than Michelle walks her dog. Michelle walks her dog 0.23 mile. How far does Lars walk his dog?