36.7×2.1+10.8的简便运算
问题描述:
36.7×2.1+10.8的简便运算
答
36.7×2.1+10.8
=36.7×2.1+0.63+10.17
=37*2.1+10.17
=37*2.1+6.3+3.87
=2.1*40+3.87
=84+3.87
=87.87