问题 解答题
合理、灵活地计算下列各题.
①34.8÷1.25÷8
②1.25×3.2×0.25
③36×25%+0.25×43+
1
4

④(2.7+12.5)÷0.5-5.6.
答案

①34.8÷1.25÷8,

=34.8÷(1.25×8),

=34.8÷10,

=3.48;

②1.25×3.2×0.25,

=(1.25×8)×(0.4×0.25),

=10×0.1,

=1;

③36×25%+0.25×43+

1
4

=36×0.25+0.25+43+0.25,

=(36+43+1)×0.25,

=80×0.25,

=20;

④(2.7+12.5)÷0.5-5.6,

=15.2÷0.5-5.6,

=30.4-5.6,

=24.8.

解答题
单项选择题