Multiplying Decimals

Multiply Decimals by Power of 10

100

2.29 x 100 = 

229

200

0.831 x 10⁴

8310

300

90.17 x 300

27,051

400

586.1 x 200 = 

117,220

500

0.032 x n = 3.2

What is the value of n?

n = 100

Multiply Decimals by Whole Numbers

100

0.6 x 13 = 

7.8

200

0.08 x 35 = 

2.8

300

$10.09 x 25 = 

$252.25

400

$3.05 x 26 = 

$79.30

500

7.891 x 56 = 

441.896

Multiply Decimals by Decimals

100

2.8 x 5.1 = 

14.28

200

10.2 x 0.7 = 

7.14

300

0.92 x 0.81 = 

0.7452

400

2.5 x 0.03 = 

0.075

500

0.005 x 4 = 

0.02

Estimation

100

Front End Estimation

4.81 x 2.6 = 

8

200

Front End Estimation

24.981 x 0.98 = 

18

300

Round to Estimate

31.12 x 0.8  = 

24

400

Round to Estimate

27.876 x 19.2 = 

600

500

Use clustering to estimate.

2.05+ 1.986 + 2.014 + 1.895 + 2.1 = 

10

Decimal Multiplication Hodge Podge

100

(2-0.75) x 0.04 = 

1.25 x 0.04

0.0500

200

Maddie's cookie recipe calls for 0.75 mL of water. She is making only half of the recipe. How much water does she need?

0.75 x 0.5 = 0.375 mL

300

ten times the difference of $7.95 and $3.48

$7.95 - $3.48 = $4.47

$4.47 x 10 = $44.70

400

Simone buys six 1.75-liter bottles of olive oil and three 0.30 liter bottles of walnut oil for her restaurant. How much oil does she buy.

(6 x 1.75) + (3 x 0.30) = 

10.5 + 0.9 = 11.4 liters of oil 

500

1.9 - 0.4 x 0.2 + 0.03 = 

1.9 - (0.4 x 0.2) + 0.03

1.9 - 0.08 + 0.03 

1.82 + 0.03

1.85