(2/3-1/6-1/5×1/6)÷(1/5+1/6) 25/2+5/3÷4-5/7×14/5 29/5+21/5×17
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/06 08:42:24
(2/3-1/6-1/5×1/6)÷(1/5+1/6) 25/2+5/3÷4-5/7×14/5 29/5+21/5×17/7-17/7 以上简便计算或计算
解方程:2/5÷a÷2/3=3/5 a÷1/2+1/4=2/5
解方程:2/5÷a÷2/3=3/5 a÷1/2+1/4=2/5
(2/3-1/6-1/5×1/6)÷(1/5+1/6)
=(4/6-1/6-1/30)/(11/30)
=14/11;
25/2+5/3÷4-5/7×14/5
=25/2+5/12-2
=131/12;
29/5+21/5×17/7-17/7
=29/5+17/7(16/5)
=(29*7+17*16)/35
=95/7;
2/5÷a÷2/3=3/5 ;
a=1;
a÷1/2+1/4=2/5
2a+1/4=2/5;
a=3/40
=(4/6-1/6-1/30)/(11/30)
=14/11;
25/2+5/3÷4-5/7×14/5
=25/2+5/12-2
=131/12;
29/5+21/5×17/7-17/7
=29/5+17/7(16/5)
=(29*7+17*16)/35
=95/7;
2/5÷a÷2/3=3/5 ;
a=1;
a÷1/2+1/4=2/5
2a+1/4=2/5;
a=3/40
(2/3-1/6-1/5×1/6)÷(1/5+1/6) 25/2+5/3÷4-5/7×14/5 29/5+21/5×17
初一计算题:1÷(1×2×3×4)+1÷(2×3×4×5)+1÷(3×4×5×6)+……+1÷(17×18×19×20)
(23 +4/15 ×5/6 )÷20/21 4/5 ÷[(3/5 +1/2 )×2] 这两道怎么用简便方法计算
(简算) (7/15-1/3)÷(1/3+1/5) (3/4+1/2)÷5/8 2/13+3/4÷9/10+1/6 [3
[(2/3-1/4)÷5/6+4/5]X5/11
1-57×21/25= 1/2+5/4×4/5= 1/6×(5-2/3)= 7/8×7+3/8=
(1/4-1/6)x12 1÷2分之1÷1 (0.18+0.9)÷9 3/7÷1/3 1-1÷7 3/7+5/13-3/
简算.3/4×4/5÷3/4×5/4 8/13÷7+1/7×6/13 (3/5+1-1/10)
10÷9分之5+6分之1×4 6分之1×3分之2÷(5分之4-15分之8) 7分之9÷5反之11+9反之2×11反之5
3/5×3/10÷5/6+1/6= 4/7×5/18+3/7÷18/5= 12.5×0.32×25=
能简算要简算3/5÷1/4÷6÷14/1523/25÷(3/4÷2/5)15/16÷(5/12÷5/8+3/8)
3-8/9×6/5÷32/3 (1-1/4×8/9)×9/7 (5/6+1/3)÷(3/4-2/3) 3/4÷(1/2-