
0.56×98+0.056×20简算
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0.56×98+0.056×20简算0.56×98+0.056×20=0.56×98+0.56×2=0.56×(98+2)=0.56×100=56
咨询记录 · 回答于2022-10-12
0.56×98+0.056×20简算
0.56×98+0.056×20简算0.56×98+0.056×20=0.56×98+0.56×2=0.56×(98+2)=0.56×100=56
314乘10.2减2乘31.4
简算
314×10.2-2×31.4=31.4×102-2×31.4=31.4×(102-2)=31.4×100=3140