问题 解答题

脱式计算

92.5×0.25×4

6.7×0.9+6.7×0.1.

答案

①92.5×0.25×4

=92.5×(0.25×4)

=92.5×1

=92.5;

②6.7×0.9+6.7×0.1

=6.7×(0.9+0.1)

=6.7×1

=6.7.

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