Decimals Problem

What is the first step when adding and subtracting decimals?

• Line up the numbers on the right

• Line up the decimals by place value

• Add or subtract like normal

• Add in placeholders

Find the product of
7.13 and 5.5 

• 39.215

• 3.9215

• 392.15

• 3921.5

23.2 + 5.9 = 

• 30.05

• 29.92

• 29.10

• 28.92

Jennifer bought 3.4 pounds of apples. She paid $.89 per pound.  How much did Jennifer pay for the apples? Round to the nearest hundredth.

• $3.00

• $3.02

• $3.01

• $3.03

Divide 12.4 by 2.

• 6.2

• 6.0

• 5.8

• 7.2

Answer explanation

To divide 12.4 by 2, you get 6.2. Therefore, the correct answer is 6.2.

Multiply 2.5 by 3.4.

• 8.5

• 7.5

• 8.0

• 6.5

Answer explanation

To multiply 2.5 by 3.4, multiply the two numbers together, ignoring the decimal points: 25 * 34 = 850. Looking at the original numbers with the decimal points, you should see a total of two decimal place values between both numbers. Add in two decimal place values into 850 starting from the right to get 8.5 (8.50 with the zero, but the zero is not needed.)

Andy finished a 100-m race in 10.16 seconds. Adam finished the race 0.83 seconds faster than Andy. Anson finished it 1.2 seconds slower than Adam. How long did Anson take to finish the race?

• 9.79

• 10.99

• 9.33

• 10.53

Subtract 6.5 from 10.2.

• 3.2

• 3.7

• 4.2

• 3.8

Answer explanation

To subtract 6.5 from 10.2, write the numbers vertically lining up the decimal points then subtract. When you bring down the decimal point, you get 3.7. Therefore, the correct answer is 3.7.

Find the product
0.7 x 0.04

• 0.28

• 2.8

• 28

• 0.028

Find the sum. 5.26 + 36.4 + 7

• 42.6

• 41.73

• 48.66

• 89.7