Question

0.81+15.3= 1300-497= 3-1/2= 3/4+0.72= 1÷0.04= 1/8÷0.625= 4.5

Answer 1

0.81+15.3=16.11 1300-497=803 3-

1

2 =2

1

2

3

4 +0.72=1.47

1÷0.04=25

1

8 ÷0.625=

1

5 4.5×

4

15 =

6

5

1

105 ：

1

5 =

1

21

1.5+

2

3 ×3=3.5 1-

1

3 ×

2

5 =

13

15 1.25×0.36×8=3.61÷（2.09-2）=

100

9