问题 解答题
用你喜欢的方法计算
(1)6.54×101(2)0.25×0.97×40
(3)45.3×101-45.3(4)0.89×4.8+0.89×5.2.
答案

(1)6.54×101,

=6.54×(100+1),

=6.54×100+6.54×1,

=654+6.54

=660.54;

(2)0.25×0.97×40,

=(0.25×40)×0.97,

=10×0.97,

=9.7;

(3)45.3×101-45.3,

=45.3×(101-1),

=45.3×100,

=4530;

(4)0.89×4.8+0.89×5.2,

=0.89×(4.8+5.2),

=0.89×10,

=8.9.

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