4.7×6.1+49×0.47-0.1×47用简便方法计算
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答案47,简便计算。 4.7x6.1+49x0.47-0.1x47 =47x0.61+0.49x47-0.1x47 =47x(0.61+0.49-0.1) =47x(1.1-0.1) =47x1 =47
咨询记录 · 回答于2022-11-06
4.7×6.1+49×0.47-0.1×47用简便方法计算
答案47,简便计算。 4.7x6.1+49x0.47-0.1x47 =47x0.61+0.49x47-0.1x47 =47x(0.61+0.49-0.1) =47x(1.1-0.1) =47x1 =47
答案47,简便计算。 4.7x6.1+49x0.47-0.1x47 =47x0.61+0.49x47-0.1x47 =47x(0.61+0.49-0.1) =47x(1.1-0.1) =47x1 =47
49x0.47=0.49x100x0.47=0.49x47,然后运用乘法分配律的逆运算