问题 解答题

用递等式计算.

25×24+125

23×34-58

1500-125×8.

答案

(1)25×24+125

=(25×4)×6+125

=100×6+125

=600+125

=725;

(2)23×34-58

=782-58

=724;

(3)1500-125×8

=1500-1000

=500.

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