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计算:6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89=.

题目详情
计算:6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89=______.
▼优质解答
答案和解析
6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89,
=(6.11+1.89)+(9.22+2.78)+(8.33+3.67)+(7.44+4.56)+5.55,
=8+12+12+12+5.55,
=49.55..
故答案为:49.55.