3.5*2.7-3.5*0.61+0.35*12用简便方法计算
3.5*2.7-3.5*0.61+0.35*12用简便方法计算
=3.5×(2.7-0.61+1.2)
=3.5×3.29
=11.515
用简便方法计算。 4.2÷0.35 5.6÷3.5 0.49÷104 8.1÷4.5
4.2÷0.35
=4.2÷0.7÷0.5
=6÷0.5
=12
5.6÷3.5
=5.6÷0.7÷5
=8÷5
=1.6
0.49÷14
=0.49÷7÷2
=0.07÷2
=0.035
8.1÷4.5
=8.1÷0.9÷5
=9÷5
=1.8
3.5X0.85+0.35X1.5用简便方法计算
解:
原式=3.5X0.85+0.35X1.5
=0.35X10X0.85+0.35X1.5
=0.35X8.5+0.35X1.5
=0.35X(8.5+1.5)
=0.35X10
=3.5
3.5 0.25×3.5×40用简便方法计算
题干模糊
3.5×3+3.5×7(用简便方法计算)
3.5X(3+7)
=3.5X10
=35
10-2.7×0.35用简便方法计算
10-2.7×0.35
=10-0.945
=9.055
没有合适的简便方法
4.6乘于3.5减去36乘于0.35用简便方法计算
4.6×3.5-36×0.35
=4.6×3.5-3.6×3.5
=(4.6-3.6)×3.5
=1×3.5
=3.5
2.8*3.5 0.35*182-3.5用简便方法
原式=3.5*(2.8+18.2-1)
=3.5*20
=7
0.35×70-0.09×350 3.5×12简便计算
原式
=0.35x70-0.09x350+3.5x12
=35x0.7-0.9x35+35x1.2
=35x(0.7+1.2-0.9)
=35x(1.9-0.9)
=35x1
=35
供参考。
1.25×32×3.5用简便方法计算
1.25×32×3.5
=(1.25×8)×(4×3.5)
=10×14
=140