100-63=37,

3.2+ 1.68=4.88,

2.8×0.4= 1. 12

14-7.4=6.6,

1.92÷0.04=48,

0.32×500= 160,

0.65+4.35= 5

10-5.4=4.6,

4÷20=0.2,

3.5×200=700,

1.5-0.06= 1.44

0.75÷ 15=0.05,

0.4×0.8=0.32,

4×0.25= 1,

0.36+ 1.54=2

1.0 1×99=99.99,

420÷35= 12,

25× 12=300,

135÷0.5=270

3/4 + 1/4 = 1,

2 + 4/9 =22/9,

3 - 2/3 =7/3,

3/4 - 1/2= 1/4

1/6 + 1/2 - 1/6 = 1/2,

7.5-(2.5+3.8)= 1.2,

7/8 + 3/8 =5/4

3/ 10 + 1/5 = 1/2

4/5 - 7/ 10 = 1/ 10,

2 - 1/6 - 1/3 = 1.5

0.5 1÷ 17=0.03,

32.8+ 19=5 1.8,

5.2÷ 1.3=4,

1.6×0.4= 0.64

4.9×0.7=3.43,

1÷5=0.2,

6÷ 12=0.5,

0.87-0.49=0.38