Multiplying Decimals Review

Product, times, factor, double, triple, per/each (for more than one) are all keywords for...

• adding

• subtracting

• multiplying

• dividing

I = Prt where r represents the rate.  Rates must be converted into ____ before multiplying.

• fractions

• mixed numbers

• decimals

• integers

4(0.03)

• 12

• 1.2

• 0.12

• 0.012

0.5(0.03)

• 1.5

• 0.15

• 0.015

• 0.0015

• 1795.5 oz

• 179.55 oz

• 17.955 oz

• 1. 7955 oz

The hundredths model in the figure is shaded to represent the multiplying of two numbers.

• 80 x 40 = 3,200

• 0.08 x 0.04 = 0.32

• 0.80 x 0.40 = 0.32

• 0.08 x 0.04 = 0.032

  3.45 x 1.2

• 3.140

• 4.140

• 6.140

• 1.140

Which equation is represented by the model above?

• 0.1 × 0.7 = 0.07

• 0.7 × 0.6 = 0.42

• 0.6 × 0.2 = 0.12

• 6.0 × 7.0 = 42.0

Count the decimal places in the problem and place the decimal in the product accordingly.

8 x 4.8 = 384

• 3 8 4

• 3 . 8 4

• 3 8 . 4