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What are the simple calculation questions of the fifth grade math score in primary school?
2/3+4/5+ 1/3

=2/3+ 1/3+4/5

= 1+4/5

= 1 4/5

2/7+ 1/6+5/7+5/6

=2/7+5/7+( 1/6+5/6)

= 1+ 1

=2

1-2/9-7/9

= 1-(2/9+7/9)

= 1- 1

=0

3/5- 1/4+2/5-3/4

=3/5+2/5-( 1/4+3/4)

= 1- 1

=0

2/7x 10+5/7x 10

=(2/7+5/7)x 10

= 1x 10

= 10

10-5/2-3/ 1

= 10- 5+0/2.

=4 and 1/2

13/20+7/ 10-3/4

= 17/20- 15/20

= 1/ 10

4/5+2/3+ 1/3

=4/5+(2/3+ 1/3)

=4/5+ 1

= 1 4/5

2/7x 10+5/7x 10

=(2/7+5/7)X 10

= 1X 10

= 10

6-2/7-5/7

=6-(2/7+5/7)

=6- 1

=5

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