495除以55+495除以45 简便运算 3Q

来源:学生作业帮助网 编辑:作业帮 时间:2024/03/29 19:19:27
495除以55+495除以45 简便运算 3Q

495除以55+495除以45 简便运算 3Q
495除以55+495除以45 简便运算 3Q

495除以55+495除以45 简便运算 3Q
495/55+495/45
=9*55/55+11*45/45
=20
495\55 + 495\45
=(550-55)/55 + (450+45)/45
=10-1+10+1
=20

495除以55+495除以45=495÷(55+45)=495÷100=4.95

4.95

495\55 + 495\45=(550-55)/55 + (450+45)/45=10-1+10+1=20

495/55+495/45=495/(55+45)=495/100=4.95

495/55+495/45=495/(55+45)=4.95

495(55+45)/(55*45),然后上下约分(495=45*11),得到答案20

495÷55+495÷45
=495×1/55+495×1/45
=495×(1/55+1/45)
=495×(55+45)/45×55
=100/5
=20