Question

用通分的方法把1/2、2/3、3/7、7/8和5/6按从小到大的顺序排列

Answer 1

2.3.7.8.6五个数字的最小公倍数为2×3×7×4=168
1/2=84/168
2/3=112/168
3/7=72/168
7/8=147/168
5/6=140/168
按从小到大的顺序排列
3/7 < 1/2< 2/3< 5/6<3/7

Answer 2

先求出分母的最小公因数，得168。
1/2=84/168
2/3=112/168
3/7=72/168
7/8=147/168
5/6=140/168
∵72/168<84/168<112/168<140/168<147/168
∴3/7<1/2<2/3<6/5<7/8

Answer 3

1/2=84/168
2/3=112/168
3/7=72/168
7/8=147/168
5/6=140/168
按从小到大的顺序排列
3/7 < 1/2< 2/3< 5/6<3/7

Answer 4

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