问题 解答题
用简便方法计算.
25×29×4720-238-162612+(465+388)
6000÷125÷8169×28+131×2848×125.
答案

(1)25×29×4,

=(25×4)×29,

=100×29,

=2900;

(2)720-238-162,

=720-(238+162),

=720-400,

=320;

(3)612+(465+388),

=612+465+388,

=(612+388)+465,

=1000+465,

=1465;

(4)6000÷125÷8,

=6000÷(125×8),

=6000÷1000,

=6;

(5)169×28+131×28,

=(169+131)×28,

=300×28,

=8400;

(6)48×125,

=6×8×125,

=6×(8×125),

=6×1000,

=6000.

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