计算6.25+17.25+24.25+35.25+9.25+7.25的简便算法
题目
计算6.25+17.25+24.25+35.25+9.25+7.25的简便算法
答案
6.25+17.25+24.25+35.25+9.25+7.25
=(6+17+24+35+9+7)+0.25×6
=98+1.5
=99.5
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