Staar Review Multiplication of Decimals

When given the problem: 3.75 x 1.2, how many decimal places will be in the answer?

• 1

• 2

• 3

Which multiplication problem does the model represent?

• 0.14 x 6 = 8.4

• 1.4 x 6 = 0.84

• 0.14 x 6 = 0.84

• 0.14 x 6 = 8.04

The hundredths model is shaded to represent the multiplication of two decimals. Which equation can be represented by the shaded parts of the model?

• 0.05 x 0.06 = 0.03

• 0.5 x 0.6 = 0.03

• 0.05 x 0.06 = 0.3

• 0.5 x 0.6 = 0.3

Mia used coins to represent the multiplication of a decimal and a whole number. Which multiplication problem did Mia represent?

• A) 0.8 x 3 = 2.4

• B) 0.08 x 3 = 2.4

• C) 0.08 x 3 = 0.24

• D) 0.8 x 3 = 0.24

Look at the model below.

The model shows that the product of 0.3 and 0.2 equals

• 1.6

• 0.6

• 2.4

• 0.06

• 14.1 kg

• 150 kg

• 27.05 kg

• 141 kg

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

• 1795.5 oz

• 179.55 oz

• 17.955 oz

• 1. 7955 oz

This model is shaded to represent 1 whole.

Which model represents 0.9 × 0.4 = 0.36?

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One bucket of gravel has a mass of 7.05 kg. What is the mass of 20 buckets of gravel in kilograms?

• 14.1 kg

• 150 kg

• 27.05 kg

• 141 kg