问题 解答题
用简便方法计算
3.5%×9.9
4.62+9.94×0.6+0.06×960.
答案

(1)3.5%×9.9,

=0.035×(10-0.1),

=0.035×10-0.035×0.1,

=0.35-0.0035,

=0.3465;

(2)4.62+9.9,

=4.62+10-0.1,

=14.52;

(3)4×0.6+0.06×960,

=4×0.6+0.6×96,

=(4+96)×0.6,

=100×0.6,

=60.

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