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Simple calculation problems in the second volume of the fifth grade of primary school mathematics
1.5/2 -( 3/2 + 4/5 )

2.7/8 + ( 1/8 + 1/9 )

3.5/6 + ( 1/2 + 2/3 )

4.9/7 - ( 2/7 - 10/2 1 )

5.3/7 + 49/9 + 4/7

6.8/9 + 15/36 + 3/27

7.5/2 - ( 3/2 + 4/5 )

8.7/8 + ( 1/8 + 1/9 )

9.9/7 - ( 2/7 - 10/2 1 )

10. 1/5 + ( 3/7 + 8/ 10 )

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