问题 解答题
100÷4×25619×29-29×519875-237-363,98×37821-(21×40-28)
答案

(1)100÷4×25,

=25×25,

=625;

(2)619×29-29×519,

=(619-519)×29,

=100×29,

=2900;

(3)875-237-363,

=875-(237+363),

=875-600,

=275;

(4)98×37,

=(100-2)×37,

=100×37-2×37,

=3700-74,

=3626;

(5)821-(21×40-28),

=821-(840-28),

=821-812,

=9.

单项选择题
单项选择题