问题 解答题

(1)5.1÷0.17÷3

(2)1.25×1.05-0.05×1.25

(3)8÷[(40.75-9.5)×0.4]

(4)1.75×3.75÷0.175

(5)1.12×1.8+2.24×0.1.

答案

(1)5.1÷0.17÷3

=5.1÷(0.17×3)

=5.1÷0.51

=10;

(2)1.25×1.05-0.05×1.25

=1.25×(1.05-0.05)

=1.25×1

=1.25;

(3)8÷[(40.75-9.5)×0.4]

=8÷[31.25×0.4]

=8÷12.5

=0.64;

(4)1.75×3.75÷0.175

=(1.75÷0.175)×3.75

=10×3.75

=37.5;

(5)1.12×1.8+2.24×0.1

=1.12×2×0.9+2.24×0.1

=2.24×0.9+2.24×0.1

=2.24×(0.9+0.1)

=2.24×1

=2.24.

问答题
单项选择题