Adding, Subtracting, and Multiplying Decimals

Add Decimals

100

43.28 + 31.45

74.73

200

52.67 + 68.46

121.13

300

12.6 + 23.02

35.62

400

43.721 + 5.26

48.981

500

163.047 + 46.985

210.032

Subtract Decimals

100

5.67 - 1.45

4.22

200

17.36 - 8.76

8.6 or 8.60

300

52.08 - 35.9

16.18

400

6 - 1.36

4.64

500

100.53 - 86.082

14.448

Whole x Decimals

100

3 x 0.8

2.4

200

5 x 0.33

1.65

300

6 x 2.4

14.4

400

13 x 0.78

10.14

500

4 x 1.23

4.92

Decimal x Decimal

100

0.7 x 0.8

0.56

200

1.2 x 0.5

0.6 or 0.60

300

1.2 x 0.05

0.060 or 0.06

400

11.03 x 0.7

7.721

500

5.05 x 1.2

6.060 or 6.06

Word Problems

100

Mrs. Whittaker bought one bag of nerds clusters for $0.88 and a cold brew for $5.95. How much money did she spend?

Mrs. Whittaker spent $6.83.

200

Jacob has $50 to spend on toys. He spends $32.75. How much money does he have left?

Jacob has $17.25 left.

300

Ms. Tonea is buying popcorn for student council. She needs to buy 8 bags. Each bag cost $2.19. How much money does she need?

Ms. Tonea needs $17.52.

400

Mrs. Mapa buys a new vacuum on sale for Black Friday for $199.99. She also got cozy slippers for $25.75. She paid with three $100 bills. How much change will she get back?

She got $74.26 back.

500

Mrs. Ranson and Mrs. Dalton bought 10 gallons of gas for $3.13 per gallon. They paid attendant $50.00. How much money did they get back?

They got $18.70 back.