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该怎么算这几题5.68乘9.9+0.568=96乘22.2+88.8=53.6乘0.7+5.36乘32+0.536乘610=要抵等试计算的

题目详情
该怎么算这几题5.68乘9.9+0.568= 96乘22.2+88.8= 53.6乘0.7+5.36乘32+0.536乘610= 要抵等试计算的
▼优质解答
答案和解析
5.68乘9.9+0.568
= 5.68*9.9+5.68*0.1
= 5.68*(9.9+0.1)
= 56.8
96乘22.2+88.8
= 88.8*24+88.8
= 88.8*(24+1)
= 2220
53.6乘0.7+5.36乘32+0.536乘610
= 5.36*7+5.36*32+5.36*61
= 5.36*(7+32+61)
= 5.36*100
= 536