Question

直接写出得数． 28÷ 4 7 = 25 14 × 49 30 = 1 7 ×7-1 = 7 8 × 4 7 = 6÷

Answer 1

28÷

4

7 =49；

25

14 ×

49

30 =

35

12 ；

1

7 ×7-1 =0

7

8 ×

4

7 =

1

2 ； 6÷

3

5 =10； (

1

8 +

1

4 )×24 =9．