题目内容

【题目】选择合适的方法计算下列各题。

10.25×4.8×1.25

25.7×2.9+4.3×2.9

346.3-6.3÷3.5×0.45

447.3÷1.25÷8.8

【答案】1.52945.494.3

【解析】

10.25×4.8×1.25

=0.25×0.6×8×1.25

=0.15×10

=1.5

25.7×2.9+4.3×2.9

=5.7+4.3×2.9

=10×2.9

=29

346.3-6.3÷3.5×0.45

=46.3-1.8×0.45

=46.3-0.81

=45.49

447.3÷1.25÷8.8

=47.3÷1.25×8×1.1

=47.3÷11

=4.3

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