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The second volume of mathematics in the fifth grade is the video of Jiangsu Education Edition.
3/4+ 1/5=4/5 3/4- 1/5= 1 1/20 5/6+2/9= 19/ 18 5/6-2/9= 1 1/ 18 2/3+3/5= 19/ 15

2/3-3/5= 1/ 15 6/7+ 1/2= 19/ 14 6/7- 1/2=5/ 14 2/3+ 1/6=5/6 1/3+ 1/4=7/ 12

1/3- 1/4= 1/ 12 1/5+ 1/7= 12/35 1/5- 1/7=2/35 1/4+ 1/9= 13/36 1/4- 1/9=5/36

1/8+ 1/9= 17/72 1/8- 1/9= 1/72 1/ 10+7/9=79/90 5/7- 1/6=23/42 1-5/9=4/9

1/5+3/8=23/40 3/4+ 1/5= 19/20 2/3-3/5= 1/5 1-2/5=3/5 5/8- 1/9=37/72

1/ 10- 1/20= 1/20 1/6+3/8= 13/24 5/9- 1/2= 1/ 18 2/3+ 1/4= 1 1/ 12 1/2+ 1/3=5/6

5/6+ 1/ 18=8/9 3/5- 1/3=4/ 15 17/ 15- 1/3=4/5 1 1/ 12-2/3= 1/4 1/2- 1/4= 1/4

1/7- 1/8= 1/56 1/3- 1/9=2/9 5/6- 1/2= 1/3 1-2/3= 1/3 5/8- 1/6= 1 1/24

1/3+ 1/6= 1/2 3/4- 1/2= 1/4 1/5+ 1/8= 13/40 5/6+4/9=23/ 18 5/9-2/5=7/45

3/7+5/2=4 1/ 14 5/8+9/ 10=6 1/40 1 1/ 12-8/ 15=23/60 1/4+ 1/6=5/ 12 1/4- 1/6= 1/ 12

1-6/7= 1/7 1 1/ 12-2/3= 1/4 3/ 10+2/5=7/ 10 7/8- 1/4=5/8 3/4+5/ 12=7/6

3/5-3/7=6/35 5/4-5/ 12=5/6 1/5- 1/9=4/45 1/3- 1/8=5/24 1 1/6-2/9=29/ 18

1/5+ 1/9= 14/45 1-2/5=3/5 7/4+ 1/7=53/28 1- 1/9=8/9 2/3-2/7=8/2 1

5/6+ 1/2=4/3 4/3-3/4=7/ 12 1-4/7=3/7 4/3+3/2= 17/6 5/9+ 18/5=5/6

3/8+7/ 10+5/8= 17/ 10 7/8-( 1/8+3/4)=0 4/7+ 1/6-4/7= 1/6

2-7/9-2/9= 1 3/5+7/8+2/5= 15/8 7/9-( 1/9+ 1/3)= 1/3

1/4+(2/5+3/4)=7/5 5/6-3/ 10+ 1/6-7/ 10=0 3/4+ 1/6-2/3= 1/4

7/8- 1/4+4/9=77/72 1- 1/3+2/7=20/2 1 1/2+4/5-3/ 10= 1

5/6-(2/3- 1/9)=5/ 18 9/ 10-(3/4+ 1/8)= 1/40 1/2+2/3-3/4=5/ 12

7/8- 1/6+ 1/4=23/24 1-(3/4-2/9)= 17/36 9/ 10- 1/5- 1/2= 1/5

1/4+3/7+ 1/2=33/28 7/8-(2/3+ 1/6)= 1/24 1-( 1/3+3/5)= 1/ 15

1/2+ 1/4+ 1/3= 13/ 12 7/8+ 1/4+ 1/2=5/8 5/7-(4/7+ 1/9)=2/63

1- 1/4- 1/2= 1/4 3/4- 1/6- 1/3= 1/4 3/ 10+ 1/4+2/5= 19/20

2/3+ 1/6+ 1/ 12= 1 1/ 12 1- 1/4-2/5=7/20 1/2+ 1/9+ 1/ 12=25/36