Multiplying Decimals Review

Complete the steps in order to multiply 23.4 by 4.2.

1. First, you should: ​ (a)   .

2. Next, you should: ​ (b)   .

3. Last, you should: ​ (c)   .

• multiply 234 by 42

• count the digits behind the decimals

• place the decimal in the product

• drop the decimal down in the product

• count the digits in front of the decimals

• line up the decimals

How many decimal places should we have in the product for this multiplication problem: 0.73 x 2.52

• 2

• 3

• 4

• 5

4 x 0.03

• 12

• 0.12

• 120

• 0.012

5.78 x 3.5

• 0.223

• 2.23

• 22.3

• 20.23

When multiplying decimal numbers, you must...

• line up the decimal points

• multiply like whole numbers & then count the number of decimal places from right to left

0.5(0.03)

• 1.5

• 0.15

• 0.015

• 0.0015

4(0.03)

• 12

• 1.2

• 0.12

• 0.012

  3.45 x 1.2

• 3.140

• 4.140

• 6.140

• 1.140

46.51 x 0.1

Mathematical Equivalence

ON

0.76 x 3.2

Mathematical Equivalence

ON