问题 解答题

用简便方法计算(分步计分)

2000÷125÷8

5×99+5

102×12

125×12×8.

答案

(1)2000÷125÷8,

=2000÷(125×8),

=2000÷1000,

=2;

(2)5×99+5,

=5×(99+1),

=5×100,

=500;

(3)102×12,

=(100+2)×12,

=100×12+2×12,

=1200+24,

=1224;

(4)125×12×8,

=(125×8)×12,

=1000×12,

=12000.

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