Question

2.16×7.6-21.6×0.24简便计算怎样才能更简便？

Answer 1

2.16×7.6-21.6×0.24
=2.16×7.6-2.16×2.4
=2.16×（7.6-2.4）
=2.16×5.2
=2.16×（5+0.2）
=2.16×5+2.16×0.2
=（2+0.1+0.06）×5+0.432
=2×5+0.1×5+0.06×5+0.432
=10+0.5+0.3+0.432
=11.232

建议检查一下题目是不是抄错了，如果中间是加号（“+”）就比较符合逻辑了。
2.16×7.6+21.6×0.24
=2.16×7.6+2.16×2.4
=2.16×（7.6+2.4）
=2.16×10
=21.6

Answer 2

答：2.16*7.6+2.16*2.4
=2.16*（7.6+2.4）
=2.16*10
=21.6
有疑问可以追问

Answer 3

26.9%x2.25+22.5x7.31%