简便计算3.6*0.45+0.36*4.2+0.036*13
题目
简便计算3.6*0.45+0.36*4.2+0.036*13
答案
3.6×0.45+0.36×4.2+0.036×13……………………变一变,就简便.
=3.6×0.45+3.6×0.42+3.6×0.13
=3.6×(0.45+0.42+0.13)
=3.6×1
=3.6
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