7/20÷[(5/6-2/3)×3]
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7/20÷[(5/6-2/3)×3]7/20÷[(5/6-2/3)×3]7/20÷[(5/6-2/3)×3]7/20÷[(5/6-2/3)×3]=7/20÷(5/6×3-2/3×3)=7/20÷(5/
7/20÷[(5/6-2/3)×3]
7/20÷[(5/6-2/3)×3]
7/20÷[(5/6-2/3)×3]
7/20÷[(5/6-2/3)×3]
=7/20÷(5/6×3-2/3×3)
=7/20 ÷(5/2-2)
=7/20×2
=7/10
7/20÷[(5/6-2/3)×3]
7/20÷[(5/6-2/3)×3]
3/5÷[7/8-(2/5+3/8)]-(4/5-1/4)* 6/11÷9/20
①(-1/6-3/20+4/5-7/12)×(-15x4)②2÷(-3/7)×4/7÷(-1/7×5)③[31/2-(5/4÷7/5+7/2)]÷(-9/8)
简算(1)20-1/4×2/5 5/6 (2) (7/16 4/5)÷3/5 (3
3/4÷[3/8-(2/5+7/20)]
13/7×2/7÷7 3/5X÷3/4=5/6
20分7÷{(6分之5-3分之2)x3}
2÷4/3 4/7÷6/7 8/7×5 1/3-1/5 7/15÷10%
计算 -5/3x(0.5-2/3)÷(-7/6)
7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1=
4/9÷12=( )3/5÷4/7=( )2÷3=( )6÷2/3=( )
先求商,再观察 1÷7 2÷7 3÷7 4÷7 5÷7 6÷7
1÷7= 2÷7= 3÷7= 4÷7= 5÷7= 6÷7= 要小数的
计算:(3/20+7/50-2/25)÷1/100=?1/2÷【2/3×(6/7-5/14)】=?
18÷7/6+6x1/7+16/7÷1/6 (4又5分之3+3又7分之2)÷(2/5+2/7)
1÷(2÷3)÷(3÷4)÷(5÷6)÷(6÷7)÷(7÷8)÷(8÷9) 快点,3分钟以内!
7/20+3/20÷1/2