题目内容

【题目】脱式计算

13.75÷1.25×0.4

239.7822.78÷3.4

33.7×9.69.5×3.7

【答案】11.2

233.08

30.37

【解析】

13.75÷1.25×0.4

=3×0.4

=1.2

239.7822.78÷3.4

=39.78-6.7

=33.08

33.7×9.69.5×3.7

=3.7×9.6-9.5

=3.7×0.1

=0.37

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