问题 解答题

脱式计算.

9.6÷2.5÷0.4

2.25÷1.25÷0.8

12.1÷2÷0.55.

答案

(1)9.6÷2.5÷0.4

=9.6÷(2.5×0.4),

=9.6÷1,

=9.6;

(2)2.25÷1.25÷0.8

=2.25÷(1.25×0.8),

=2.25÷1,

=2.25;

(3)12.1÷2÷0.55

=12.1÷(2×0.55),

=12.2÷1.1,

=11.

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