Adding and Subtracting Decimals

Rounding

100

Round to the nearest whole number.

14.56

15

200

Round to the nearest penny

13.573

$13.57

300

Round to the nearest 10th

12.378

12.4

400

Round to the nearest 100th

0.95321

0.95

500

Round to the nearest penny.

12.998

$13

Adding decimals

100

3.5 + 8.25 

11.75

200

3.2 + 2.45

5.65

300

6.8 + 78.1

84.9

400

4.35 + 2.650

7

500

9.87265 + 0.1235

9.99615

Adding 3 numbers

100

19 + 5.2 + 74.3 =

98.5

200

12.4 + 0.7896 + 5

18.1896

300

0.2 + 0.687 + 2.3 

3.187

400

3.4 + 17.89 + 27

48.29

500

529 + 3.25 + 410.2

942.45

Subtracting decimals

100

7.5 - 3.15

4.35

200

12.98 - 0.74321

1.23679

300

15 - 3.45

11.55

400

7.8 - 6.382

1.418

500

14.6 - 12

2.6

Subtracting with zeros

100

82 - 9.568

72.432

200

7.2-3.1478

4.0522

300

14.7 - 0.2356

14.4644

400

100 - 99.34587

0.65413

500

980 - 87.0005

892.9995