2.7*9.9+1.27简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 04:14:38
![2.7*9.9+1.27简便计算](/uploads/image/z/129818-2-8.jpg?t=2.7%2A9.9%2B1.27%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
2.7*9.9+1.27简便计算
2.7*9.9+1.27简便计算
2.7*9.9+1.27简便计算
2.7*9.9+1.27
=2.7x9.9+1+0.27
=2.7x9.9+2.7x0.1+1
=2.7x(9.9+0.1)+1
=2.7x10+1
=28
2.7*9.9+1.27
=2.7*9.9+2.7*0.1+1
=2.7*(9.9+0.1)+1
=2.7*10+1
=27+1
=28
原式=2.7*9.9+0.27+1
=2.7*(9.8+0.1)+1
=27+1=28
敬请采纳有不会请追问~
原式=2.7x9.9+1+0.27
=2.7x9.9+2.7x0.1+1
=2.7x(9.9+0.1)+1
=2.7x10+1
=28
=2.7x9.9+1+0.27
=2.7x9.9+2.7x0.1+1
=2.7x(9.9+0.1)+1
=2.7x10+1
=28