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Adding Decimals
Subtracting Decimals
Adding Fractions
Subtracting Fractions
Lowest Common Multiple
100

0.1 + 0.7

0.8

100

7.5 - 1.2

6.3

100

1/2 + 1/4

3/4

100

1/2 - 1/4

1/4

100

3 and 6

6

200

0.24 + 0.4

0.64

200

20.2 - 14.8

5.4

200

7/9 + 1/6

17/18

200

5/6 - 3/8

11/24

200

6 and 8

24

300

1.35 + 0.27

1.62

300

5.10 - 4.75

0.35

300

4 7/8 + 1/8

5

300

2 1/8 - 1/4

1 7/8

300

6 and 9

18

400

1.809 + 3.091

4.9

400

62.25 - 59.74

2.51

400

2 4/5 + 3 1/2

6 3/10

400

2 1/4 - 1 1/3

11/12

400

2, 3 and 4

12

500

2.6 + 2.04 + 0.099

4.739

500

150.35 - 147.9

2.45

500

5 3/4 + 2 3/5

8 7/20

500

9 3/8 - 3 2/3

5 17/24

500

3, 6 and 9

36