3.25+5.25=9.5135÷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 0.51÷17＝0.14－7.4＝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, 03, 6÷12＝0.5, 0.87－0.49＝0.38 3.2＋1.68＝4.88, 2.8×0.4＝ 1.129.18-8.15=156.3+2.3=58.6

5.6÷7= 0.8

27÷0.01= 2700

1.25×4=5

0.54÷0.09=6

5.2×0= 0

1.12×100=112

8.7÷0.29= 30

0.04×25= 1

1.25×0.8= 2

8.5÷5=1.7

7÷0.5=14

1÷4=0.25

6.3×101= 636.3

1.8÷0.9=2

0.9×6= 5.4

0.1×0.01= 0.001

28.6÷1000=0.0286

1.4×0.2= 0.28

5÷2.5= 2

4.2÷0.3=14

2.4÷0.6= 4

0.36÷3= 0.12

60×0.05= 3

1.7×3=5.1

4.5×0.2=0.9

7×0.08= 0.56

2.8÷0.04= 70

1.6×5= 8

0.37×20= 7.4