问题 解答题
用简便方法计算
456+197157-46-6425×16×50490÷35
答案

(1)456+197

=456+200-3,

=656-3,

=653;

(2)157-46-64

=157-(46+64),

=157-110,

=47;

(3)25×16×50

=(25×4)×(4×50),

=100×200,

=20000;

(4)490÷35

=490÷(7×5),

=490÷7÷5,

=70÷5,

=14.

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