Question

5/6加7/12加1/12用最简方法计算

Answer 1

5/6加7/12加1/12用最简方法计算

5/6+7/12+1/12
=5/6+(7/12+1/12)
=5/6+8/12
=5/6+4/6
=9/6
=3/2

7/8加3/5减3/10用最简方法计算

7/8+3/5-3/10
=7/8+(6/10-3/10)
=7/8+3/10
=35/40-12/40
=23/40

7/12×6加5/12×6用简便方法计算

（7/15+5/12）*6
=1*6
=6

7/15+5/9+8/15 用最简方法计算

7/15+5/9+8/15
=(7/15+8/15)+5/9
=1+5/9 +去掉写成带分数

6/13乘5/12加7/12乘5/13简便方法计算

6/13×5/12+7/12×5/13
= (6×5+7×5)/(13×12)
= [5×(6+7)]/(13×12)
= (5×13)/(13×12)
= 5/12

1/6加7/8加10/12用简便方法计算

原式
=1/6+7/8+10/12
=1/6+7/8+5/6
=（1/6+5/6）+7/8
=1+7/8
=1又7/8
供参考。

用简便方法计算：7/12÷（-1/5)+(-20)÷12/7-7/12÷(-1/13)

7/12÷（-1/5)+(-20)÷12/7-7/12÷(-1/13)
=7/12*（-5）+(-20)*7/12-7/12*(-13)
=7/12*(-5-20+13）
=7/12*（-12）
=-7

1/3加7/9加5/6加17/18加13/36用简便方法计算

1/3加7/9加5/6加17/18加13/36
=1+1/9+1-1/6+1-1/18+1/3+1/36
=2+1/6+1/18+1/36
=2+1/6+1/12
=2+1/4
=2又1/4

(5/6+7/8-5/12)÷ 1/24用简便方法计算

(5/6+7/8-5/12)÷ 1/24
=(5/6+7/8-5/12)*24=20+21-10=31

7/8×1/2+5/6×1/7这题要用最简便的方法计算

7/8×1/2+5/6×1/7这题要用最简便的方法计算
7/8×1/2+5/6×1/7
=7/16+5/42
=
通分计算
最小公倍数是24*7
答