四点5×6点二零的竖式计算
2015-04-17
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4.5×6.2
=4.5×(或羡团衫橘派颂6+0.2)
=4.5×6+4.5×0.2
=4.5×2×3+0.9
=9×3+0.9
=27+0.9
=27.9
=4.5×(或羡团衫橘派颂6+0.2)
=4.5×6+4.5×0.2
=4.5×2×3+0.9
=9×3+0.9
=27+0.9
=27.9
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