100÷4×25619×29-29×519875-237-363,98×37821-(21×40-28)-数学

题目简介

100÷4×25619×29-29×519875-237-363,98×37821-(21×40-28)-数学

题目详情

100÷4×25619×29-29×519875-237-363,98×37821-(21×40-28)
题型:解答题难度:中档来源:不详

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.

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