Question

1.85+3.6+5.7×4+2.4+6.6怎么简便计算？

Answer 1

题目可以使用乘法分配律以及凑整法实现简便计算
1.85+3.6+5.7×4+2.4+6.6=1.85+3.6+2.4+6.6+（5+0.7）×4
=1.85+6+6.6+20+0.28
=1.85+0.15+0.13+12.6+20
=2+12.6+20+0.13
=34.73

Answer 2

1.85+3.6+5.7×4+2.4+6.6
=1.85+3.6+22.8+2.4+6.6
=1.85+（3.6+2.4）+23+7-0.2-0.4
=1.85+6+（23+7）-（0.2+0.4）
=7.85+30-0.6
=37.85-0.6
=37.25

Answer 3

1.85+3.6+5.7×4+2.4+6.6
=2-0.15+3.6+22.8+9
=5.6-0.15+31.8
=37.4-0.15
=37.25