问题描述:
用梯等式计算
最佳答案:
解法一:
0.279*343+0.657*279
=0.279*343+0.657*0.279*1000
=0.279x(343+0.657x1000)
=0.279x1000
=279
解法二:
0.279*343+0.657*279
=0.343*279+0.657*279
=(0.343+0.657)*279
=1*279
=279
用梯等式计算:0.279*343+0.657*279
问题描述:
用梯等式计算
解法一:
0.279*343+0.657*279
=0.279*343+0.657*0.279*1000
=0.279x(343+0.657x1000)
=0.279x1000
=279
解法二:
0.279*343+0.657*279
=0.343*279+0.657*279
=(0.343+0.657)*279
=1*279
=279