Multiply Decimals Day 1

By a Power of 10

100

1.285 x 10²

128.5

200

0.394 x 10³

394.0

300

12.5 x 10²

1,250

400

10³ x 125.8

125,800

500

10⁴ x 8.34

83,400

By a Whole Number

100

2 x 0.4 =

0.8

200

1.2 x 6 =

7.2

300

0.15 x 4 =

0.60

400

3 x 0.48 =

1.44

500

14 x 2.6 =

36.4

Using Standard Algorithm

100

0.3 x 0.2 =

0.06

200

0.5 x 0.6 =

0.30

300

5.4 x 0.6 =

3.24

400

16.2 x 1.3 =

21.06

500

73.4 x 2.6 =

190.84

Using Partial Products

100

What is the product?

3.5 x 2.1 =

0.05 + 0.3 + 1.0 + 6.0

7.35

200

What is missing?

1.2 x 0.3 =

0.06 + ______ = 0.36

0.30

300

Show your work.

8.2 x 0.4 =

0.08 + 3.2 = 3.28

400

Show your work.

4.7 x 2.5 =

0.35 + 2.0 + 1.4 + 8.0 = 11.75

500

Show your work.

17.6 x 0.34 =

0.024 + 0.28 + 0.4 + 0.18 + 2.1 + 3.0 = 5.984

Using Models

100

Use hundredth grid papers to solve.

0.4 x 0.4 =

0.16

200

Use hundredth grid papers to solve.

0.7 x 0.6 =

0.42

300

Use hundredth grid papers to solve.

2.5 x 0.3 =

0.75

400

Which grid show 0.4 x 0.8?

C

500

What problem is represented by the shaded portion of the grid?

0.5 x 0.4 = 0.20