问题 解答题

计算下列各题,能简算的要简算.

5.24+7.9+4.76

25×37×4

9.9×3.6

15.6×101-15.6

4.5÷5÷9.

答案

(1)5.24+7.9+4.76,

=(5.24+4.76)+7.9,

=10+7.9,

=17.9;

(2)25×37×4,

=25×4×37,

=100×37,

=3700;

(3)9.9×3.6,

=(10-0.1)×3.6,

=36-0.36,

=35.64;

(4)15.6×101-15.6,

=15.6×(101-1),

=15.6×100,

=1560;

(5)4.5÷5÷9,

=4.5÷(5×9),

=4.5÷45,

=0.1.

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