172.4×6.2+2724×0.38简便运算

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172.4×6.2+2724×0.38简便运算
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172.4×6.2+2724×0.38简便运算
172.4×6.2+2724×0.38
简便运算

172.4×6.2+2724×0.38简便运算
172.4×6.2+2724×0.38
=1724×0.62+(1000+1724)×0.38
=1724×0.62+1724×0.38+1000×0.38(方法:乘法分配律)
=1724×(0.62+0.38)+380(方法:乘法结合律)
  =1724×1+380
=2104

172.4×6.2+2724×0.38
=1724×0.62+(1000+1724)×0.38
=1724×0.62+1724×0.38+1000×0.38
=1724×(0.62+0.38)+380
=1724×1+380
=2104

1068.88+1035.12 =2104