Multiplying/Dividing Decimals

Estimating

100

Use Compatible Numbers.

2.302 / 4

0.6

200

Round to nearest tenth.

0.873 x 0.092

0.9 x 0.1 = 0.9

300

Round to whole number.

34.423 x 4.608

34 x 5 = 170

400

Use Compatible Numbers

4.253 / 8

0.5

500

Estimate AND determine if estimate is less than or greater than actual quotient.

0.874 / 5

0.2; greater than

Powers of 10

100

5.23 x 10⁴

52,300

200

3,100 / 1,000

3.1

300

150.1 / 10³

0.1501

400

3.5211 x 10²

352.11

500

.054431 x 10⁷

544,310

Multiplying Decimals

100

0.49 x 29

14.21

200

9 x 0.019

0.171

300

0.94 x 12.7

11.938

400

n x 8.7 when n = 0.4

3.48

500

3.9 x 0.004

0.0156

Dividing Decimals

100

0.924 / 4

0.231

200

28.05 / 33

0.85

300

0.164 / 8

0.0205

400

6.452 / 0.4

16.13

500

74.16 / 1.8

41.2

Mystery Questions

100

$7.80 x 6

$46.80

200

$10.28 / 4

$2.57

300

Isabelle buys 1 bunch of kale for $3.39 and two 6-ounce packs of blueberries for $3.99 each. How much money does she spend?

$11.37

400

Compare using >, <, =

8.08 / 0.2 _____ 80.8 / 2

=

500

Joe's Pet Store is selling fish- 3 for $52.92. If Jan buys 1 fish and pays with a $20 bill, how much change does she get back?

$52.92 / 3 = $17.64

$20- $17.64 = $2.36