Operations with Decimals

Addition

100

3.4 + 2.4

What is 5.8

200

456.2 + 7

What is 463.2

300

25.348 + 19.832

What is 45.18

400

5439.3298 + 2.39

What is 5441.7198

500

75.60352 + 1256.3245

What is 1331.92802

Multiplication

100

0.2 x 1.3

What is .26

200

232 x .93

What is 215.76

300

.2039 x 3.4

What is .69326

400

1.4783 x 4.38

What is 4.474954

500

12.376 x 234.1

What is 2897.2216

Subtraction

100

13.7 - 12.1

1.6

200

256 - 4.5

What is 251.5

300

5312.45 - 456.89

What is 4855.56

400

19.729 - 4.32

What is 15.409

500

1289.36 - 47.627

What is 1241.733

Vocabulary

100

The product of 12.3 and 2

What is 24.6

200

The sum of 3.45 and 8.2

What is 11.65

300

Find the product of 30.7 and 0.4

What is 12.28

400

The difference between 38.376 and 4.3

What is 34.076

500

Determine the value of .19 x 7.2

What is 1.368

Problem Solving

100

The chef filled a big pot with 3.7 cups of water and filled a smaller pot with 7.3 cups of water. Which pot has more water?

What is the smaller pot.

200

The temperature of the ocean was 67.3 degrees at dawn. By noon, it had increased by 8.6 degrees. What was the temperature at noon?

What is 75.9 degrees.

300

Todd ran 5 laps in 28.5 minutes. If he ran each lap at the same pace, how long did it take him to run one full lap?

What is 5.7 minutes.

400

Maria received $15 an hour for raking leaves. If she raked for 5.5 hours, how much was she paid?

What is $77.50

500

There are 19.3 cups of flour in a bag. The chef uses 2.9 cups for making cookies. Then, he uses 1.2 cups of sugar and 5.1 cups of flour for making banana bread. How many cups of flour are left?

What is 11.3