用简便算法解这道题1.25*67.875+125*6.7875+1.25*53.375
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 21:09:27
![用简便算法解这道题1.25*67.875+125*6.7875+1.25*53.375](/uploads/image/z/2107799-71-9.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E8%A7%A3%E8%BF%99%E9%81%93%E9%A2%981.25%2A67.875%2B125%2A6.7875%2B1.25%2A53.375)
x){>eu
OnS_,_b̗_.agdefganmbꙃ aSc=csS"}|&0FΆN!R-:BB
J&$UF
T"$ca` Yyvst$78pGqa:E v ϛ
用简便算法解这道题1.25*67.875+125*6.7875+1.25*53.375
用简便算法解这道题
1.25*67.875+125*6.7875+1.25*53.375
用简便算法解这道题1.25*67.875+125*6.7875+1.25*53.375
1.25*67.875+125*6.7875+1.25*53.375
=1.25*67.875+1.25*678.75+1.25*53.375
=1.25*(67.875+53.375)+1.25*678.75
=1.25*121.25+1.25*678.75
=1.25*(121.25+678.75)
=1.25*800
=1000
原式=1.25×67.875+1.25×678.75+1.25×53.375
=1.25×(67.875+678.75+53.375)
=1.25×800
=1000