Topic 6: Multiplying Decimals

Story Problems/Estimate

100

Use estimation: 3 x 4.6

What is 15?

200

Use estimation to find the product of of 4.2 and 0.8

What is 4?

300

A pet store sold 37 bags of dog food in one day. If each bag sold for $11.59, how much money did the store collect from selling dog food?

What is $428.83?

400

Amy buys 10 bags of potatoes for $4.55 per bag and 100 resealable bags for $0.18 each. How much did Amy spend in all?

What is $63.50?

500

Kyle is buying lunch at the sandwich shop. He buys 3 veggie wraps, and one cheese melt. How much does Kyle spend in all?

Cheese melt: $3.79 per sandwich

Veggie Wrap: $3.29 per sandwich

What is $13.66?

Decimal x Decimal

100

What is the product of 0.4 and 0.2?

What is 0.08?

200

5.7 x 0.9

What is 5.13?

300

1.25 x 1.5

What is 1.92

400

0.72 x 3.1

What is 2.232?

500

2.04 x 0.25

What is 0.51?

Decimal x Whole#

100

25 x 0.25

What is 6.25?

200

95 x 1.2

114

300

0.45 x 24

What is 10.8?

400

325 x 0.6

What is 195?

500

257 x 0.39

What is 100.23?

10's,100's, 1,000's

100

9.34 x 10

What is 93.4?

200

8.7 x 100

What is 870?

300

1.23 x 10²

What is 123?

400

2.98 x 10³

What is 2,980?

500

5.16 x 10³

What is 51.60?