计算:3.49+4.47+3.51-2.38+4.53-2.62=_.
问题描述:
计算:3.49+4.47+3.51-2.38+4.53-2.62=______.
答
3.49+4.47+3.51-2.38+4.53-2.62
=(3.49+3.51)+(4.47+4.53)-(2.38+2.62)
=7+9-5
=11.
故答案为:11.