0.91×1.25+1.09÷4/5怎样简便运算?
问题描述:
0.91×1.25+1.09÷4/5怎样简便运算?
答
0.91×1.25+1.09÷4/5 =0.91×1.25+1.09×1.25 =(0.91+1.09)×1.25 =2×1.25 =2.5
0.91×1.25+1.09÷4/5怎样简便运算?
0.91×1.25+1.09÷4/5 =0.91×1.25+1.09×1.25 =(0.91+1.09)×1.25 =2×1.25 =2.5