1个回答
2016-05-09
展开全部
1.25乘以三点6+2点二五×5点六的简便运算
=1.25x3.6+1.25x5.6+5.6
=1.25x(3.6+5.6)+5.6
=1.25x9.2+5.6
=1.25x10-1.25x0.8+5.6
=12.5-1+5.6
=11.5+5.5+0.1
=17.1
=1.25x3.6+1.25x5.6+5.6
=1.25x(3.6+5.6)+5.6
=1.25x9.2+5.6
=1.25x10-1.25x0.8+5.6
=12.5-1+5.6
=11.5+5.5+0.1
=17.1
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