简便方法计算 1.625+2.625+3.625+······+79.625+80.625简便方法计算以下各题:752*1.25+4.45*12.5+0.035*1250.4*160+36*1.6-31*3.21.625+2.625+3.625+······+79.625+80.625(写出过程)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/02 09:20:00
简便方法计算 1.625+2.625+3.625+······+79.625+80.625简便方法计算以下各题:752*1.25+4.45*12.5+0.035*1250.4*160+36*1.6-31*3.21.625+2.625+3.625+······+79.625+80.625(写出过程)

简便方法计算 1.625+2.625+3.625+······+79.625+80.625简便方法计算以下各题:752*1.25+4.45*12.5+0.035*1250.4*160+36*1.6-31*3.21.625+2.625+3.625+······+79.625+80.625(写出过程)
简便方法计算 1.625+2.625+3.625+······+79.625+80.625
简便方法计算以下各题:752*1.25+4.45*12.5+0.035*125
0.4*160+36*1.6-31*3.2
1.625+2.625+3.625+······+79.625+80.625(写出过程)

简便方法计算 1.625+2.625+3.625+······+79.625+80.625简便方法计算以下各题:752*1.25+4.45*12.5+0.035*1250.4*160+36*1.6-31*3.21.625+2.625+3.625+······+79.625+80.625(写出过程)
752 ×1.25+44.5 ×1.25+3.5 ×1.25=(752+44.5+3.5)×1.25=1000
40 ×1.6+36 ×1.6—31 ×2 ×1.6=(40+36-62)×1.6=22.4
(1+80)×(80÷2)+0.625 ×80=3290