问题 解答题

简便运算我最行!

(1)101×51.8-1.25×51.8×0.8

(2)17.48×37-174.8×1.9+1.748×820.

答案

(1)101×51.8-1.25×51.8×0.8,

=51.8×(101-1.25×0.8),

=51.8×(101-1),

=51.8×100,

=5180;

(2)17.48×37-174.8×1.9+1.748×820,

=17.48×37-17.48×19+17.48×82,

=17.48×(37-19+82),

=17.48×100,

=1748.

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