1、直接写出得数

6/7÷3=         3/5×15=                   2-3/7=

1+2%=        1/2×99+99×1/2=     7/8÷7/10=

2/3=         4/3×75% =               7/8×4×8/7=

2、解方程

X-2/7X=1/14 X÷1/8=15×2/3 40%X-1/4=2/7

3、简便计算

7/2×5/83/2÷8/5                        1-5/8÷25/283/10

2/34/15×5/6)÷20/21            4/5÷[(3/51/2)×2]

5/97/84/91/8                      3×(2/151/12)-2/5

7/813/16)÷13/16                  1/5÷[(2/31/5)×1/13

3-3/2×10/212/7                       8/9÷7+1/7×1/9

2-6/13÷9/262/3                       1/65/6×1/5