问题 解答题

(0.72×0.4×0.35)÷(0.9×0.2×7)

答案

(0.72×0.4×0.35)÷(0.9×0.2×7),

=0.72×0.4×0.35÷0.9÷0.2÷7,

=(0.72÷0.9)×(0.4÷0.2)×(0.35÷7)

=0.8×2×0.05,

=0.8×(2×0.05),

=0.8×0.1,

=0.08.

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