3.631.4+43.96.4简便运算

来源：学生作业帮助网编辑：作业帮时间：2024/11/27 02:49:43

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3.6*31.4+43.9*6.4简便运算
3.6*31.4+43.9*6.4简便运算

3.6*31.4+43.9*6.4简便运算
3.6×31.4+43.9×6.4
=3.6×31.4+43.9×（10-.3.6）
=43.9×10-43.9×3.6+31.4×3.6
=439-3.6×（43.9-31.4）
=439-3.6×12.5
=439-45
=394

3.6*31.4+43.9*6.4
=31.4*（10-6.4）+43.9*6.4
=31.4*10+（43.9-31.4）*6.4
=314+12.5*6.4
=394

简便运算：3.6*31.4+43.9*6.4 3.6*31.4+43.9*6.4怎样简便运算 3.6*31.4+43.9*6.4简便运算 3.6×31.4 +43.9×6.4的简便算法一道简便计算 3.6*31.4+43.9*6.4 0.75*15+4.5*2.5 3.6*31.4+43.9*6.4 简便计算哪个人会简便计算?3.6×31.4+43.9×6.4 3.6*3.14+43.9*6.4 简便运算 3.6乘31.4+43.9乘6.4=?（一定是简便计算） 0.75×15+4.5×2.5 3.6×31.4+43.9×6.4 的简便运算 3.6+6.4-3.6+6.4怎么简便运算 6.4×2.24+2.24×3.6,简便方法计算 6.4*0.25+3.6/4 简便运算 6.4×0.25+3.6÷4简便算法 11-3.6+6.4怎么简便计算? 5.28+3.6+4.72+6.4【简便计算】 11-3.6+6.4怎样简便运算 5.48+3.6+4.52+6.4的简便运算