问题 解答题
计算下面各题,注意运用简便方法.
1.7-36÷301÷〔(1.1-0.7)×0.2〕7.3×7.3+2.7×7.34.78-0.96-0.04930÷5÷0.6.
答案

(1)1.7-36÷30

=1.7-1.2,

=0.5;

(2)1÷[(1.1-0.7)×0.2]

=1÷[0.4×0.2],

=1÷0.08,

=12.5;

(3)7.3×7.3+2.7×7.3

=(7.3+2.7)×7.3,

=10×7.3,

=73;

(4)4.78-0.96-0.04

=4.78-(0.96+0.04),

=4.78-1,

=3.78;

(5)930÷5÷0.6

=930÷(5×0.6),

=930÷3,

=310.

选择题
选择题