36.7×2.1+10.8的简便运算
3个回答
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
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