Question

小学五年级分数简便计算

5/6-3/4+2/3-1/4
13/12-2/7-5/7+5/6
17/6+5/9-1/9
要计算过程

Answer 1

主要应用了同分母先相加减，这样就剩去了通分的步骤
5/6-3/4+2/3-1/4=(5/6+4/6)-(3/4+1/4)=3/2-1=1/2
13/12-2/7-5/7+5/6=(13/12+10/12)-(2/7+5/7)=23/12-1=11/12
17/6+5/9-1/9=17/6+(5/9-1/9)=17/6+4/9=51/18+8/18=59/18

Answer 2

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

13/12-2/7-5/7+5/6
=13/12+5/6-(2/7+5/7)
=13/12+10/12-1
=11/12

17/6+5/9-1/9
=17/6+4/9
=51/18+8/18
=59/18

Answer 3

5/6-3/4+2/3-1/4
=（5/6+4/6）-（3/4+1/4）
=9/6-1
=1/2

Answer 4

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Answer 5

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