2/5×(3/4+1/5)÷9/10
2/5×(3/4+1/5)÷9/10
六年级数学题1.写出过程2-(1/5+1/3)(3/4-3/5)÷7/10(2/3+2/9)÷20/211-5/14÷5
1÷2/1÷3/2÷4/3÷5/4÷6/5÷7/6÷8/7÷9/8÷10/9简便算法
1÷2/1÷3/2÷4/3÷5/4÷6/5÷7/6÷8/7÷9/8÷10/9=?
5/9÷[4/5÷(3/5-1/4)]
用简便方法计算:(1/90)÷(2/3-4/5+2/9-3/10)
(4/3-5/3)÷10/7 (3/2+9/2)÷21/20 1-14/5÷7/5
2-(5/1+3/1),(4/3-5/3)÷10/7,(3/2+9/2)÷21/20,1-14/5÷7/5,4/1÷(3
分数除法2/5÷2 2除3/5 3/5÷2/3 化简比24:36 0.75:1 3/4:9/10
9/10÷3/8÷1/5 3/4*8/15*5/6 简便计算
8/9x=4/5 2/3x÷1/4=12 3/4x÷1/6=18 (10/9-2/3)x=
(1+2+3+4+5+6+7+8+9+10)÷55=?