
用简便方法计算下面各题.44.4+9.8+5.623.7×0.25×46.
用简便方法计算下面各题.44.4+9.8+5.623.7×0.25×46.25×2.3+2.3×3.74....
用简便方法计算下面各题.44.4+9.8+5.623.7×0.25×46.25×2.3+2.3×3.74.
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(1)44.4+9.8+5.6
=44.4+5.6+938
=50+9.8
=59.8;
(2)23.7×0.25×4
=23.7×(0.25×4)
=23.7×1
=23.7;
(3)6.25×2.3+2.3×3.75
=(6.25+3.75)×2.3
=10×2.3
=23.
=44.4+5.6+938
=50+9.8
=59.8;
(2)23.7×0.25×4
=23.7×(0.25×4)
=23.7×1
=23.7;
(3)6.25×2.3+2.3×3.75
=(6.25+3.75)×2.3
=10×2.3
=23.
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