题目内容
【题目】选择合适的方法计算下列各题。
(1)0.25×4.8×1.25
(2)5.7×2.9+4.3×2.9
(3)46.3-6.3÷3.5×0.45
(4)47.3÷1.25÷8.8
【答案】1.5;29;45.49;4.3
【解析】
(1)0.25×4.8×1.25
=(0.25×0.6)×(8×1.25)
=0.15×10
=1.5
(2)5.7×2.9+4.3×2.9
=(5.7+4.3)×2.9
=10×2.9
=29
(3)46.3-6.3÷3.5×0.45
=46.3-1.8×0.45
=46.3-0.81
=45.49
(4)47.3÷1.25÷8.8
=47.3÷(1.25×8×1.1)
=47.3÷11
=4.3
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