问题标题:
1.2x4.3+9.8x5.7如何简算?
问题描述:
1.2x4.3+9.8x5.7如何简算?
靳宏磊回答:
1.2x4.3+9.8x5.7=1.2x4.3+(1.2+8.6)x5.7=1.2x4.3+1.2x5.7+8.6x5.7=1.2x(4.3+5.7)+8.6x5.7=12+49.02=61.02
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