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Junior one math exercise book
In order to calculate the question according to the score, the details are as follows:

1、3/7 × 49/9 - 4/3

2、8/9 × 15/36 + 1/27

3、 12× 5/6 – 2/9 ×3

4、8× 5/4 + 1/4

5、6÷ 3/8 – 3/8 ÷6

6、4/7 × 5/9 + 3/7 × 5/9

7、5/2 -( 3/2 + 4/5 )

8、7/8 + ( 1/8 + 1/9 )

9、9 × 5/6 + 5/6

10、3/4 × 8/9 - 1/3

1 1、7 × 5/49 + 3/ 14

12、6 ×( 1/2 + 2/3 )

13、8 × 4/5 + 8 × 1 1/5

14、3 1 × 5/6 – 5/6

15、9/7 - ( 2/7 – 10/2 1 )

16、5/9 × 18 – 14 × 2/7

17、4/5 × 25/ 16 + 2/3 × 3/4

18、 14 × 8/7 – 5/6 × 12/ 15

19、 17/32 – 3/4 × 9/24

20、3 × 2/9 + 1/3