Rounding Decimals
Adding Decimals
Subtracting Decimals
Subtraction
Use a Different Strategy
100

Round to 2 d.p

32.564

32.56

100

3.1 + 5.1 = 

 8.2

100

20.8 - 7.3=

 13.5

100

12.4 - 3.8=


8.6

100

5.10-3.56

1.56

200

Round to 1 d.p.

12.37

12.4

200

14.7+15.1=

29.8

200

34.6 - 27.9=

 6.7

200

4.5 - 3.7=


0.8

200

3.45+9.6

13.05

300

Round to 3d.p.

98.7621

98.762

300

3 + 4.5=

 7.5

300

15.2- 0.4=

14.8

300

79.38 - 9.19=


 70.19

300

9.00-4.50

4.50

400

Rond to 3 d.p.

29.6195

29.620

400

17.82 + 3.66=

 21.48

400

6 - 2.3=

3.7

400

12.1 - 0.9=


 11.2

400

36.456+3.285

39.741

500
Round to 2 d.p.


32.997

33.00

500

11.7 + 2.81=

14.51

500

1124.9 - 567.80=

 557.1

500

10.21 - 5.6=


4.61

500

95.2-68.67

26.53

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