6.5 Practice

Find each product. 5.4 × 3 =

• 16.2

• 15.2

• 14.2

• 17.2

Find each product. 3.8 × 4 =

• 15.2

• 14.8

• 16.0

• 15.0

Find each product. 0.55 × 8 =

• 4.4

• 3.5

• 5.0

• 4.0

Find each product. 8.19 × 5 =

• 40.95

• 39.95

• 41.00

• 38.50

Insert a decimal point in each answer to make the equation true. 5 × 6.3 = 315

• 31.5

• 3.15

• 3150

• 0.315

Insert a decimal point in each answer to make the equation true. 3.01 × 9 = 2709

• 27.09

• 2.709

• 270.9

• 0.2709

If 4n = 3.60, which is the value of n?

• 0.09

• 0.9

• 9

• 90

Ms. Valencia used mental math to find the product of $11.97×5, but she made

a mistake. Her steps are shown.

Step 1: Round $11.97 to $12.

Step 2: Multiply $12.00×5=$60.00.

Step 3: Subtract $12.00−$11.97=$3.00.

Step 4: Subtract $60.00−$3.00=$57.00.

Select the step in which Kayla made her first mistake.

• Step 1

• Step 2

• Step 3

• Step 4

Jamal used mental math to find the product of $23.45 × 4, but he made a mistake. His steps are shown:

1. Step 1: Round $23.45 to $23.

2. Step 2: Multiply $23 × 4 = $100.00.

3. Step 3: Subtract $23.00 − $23.45 = −$0.45.

4. Step 4: Subtract $100.00 − $0.45 = $99.55.

Select the step in which Jamal made his first mistake.

• Step 1

• Step 2

• Step 3

• Step 4

• A

• B

• C

• D