18x0.56+0.18ⅹ22+0.44x9用简便方法计算
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18x0.56+0.18ⅹ22+0.44x9=1.8×5.6+1.8×2.2+0.22×2×9=1.8×5.6+1.8×2.2+1.8×2.2=1.8×(5.6+2.2+2.2)=18
咨询记录 · 回答于2022-10-07
18x0.56+0.18ⅹ22+0.44x9用简便方法计算
用简便算法怎么算
18x0.56+0.18ⅹ22+0.44x9=1.8×5.6+1.8×2.2+0.22×2×9=1.8×5.6+1.8×2.2+1.8×2.2=1.8×(5.6+2.2+2.2)=18
再看一遍
18x0.56+0.18ⅹ22+0.44x9=1.8×5.6+1.8×2.2+0.22×2×9=1.8×5.6+1.8×2.2+1.8×2.2=1.8×(5.6+2.2+2.2)=1.8×10=18
简便算法就是这样算的