124.68+32.468+524.68+724.68+9谢谢 sorry 错了!124.68+32.468+524.68+724.68+924.68注意第二个的小数点 不是324.68 是32.468!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 16:39:55
![124.68+32.468+524.68+724.68+9谢谢 sorry 错了!124.68+32.468+524.68+724.68+924.68注意第二个的小数点 不是324.68 是32.468!](/uploads/image/z/1757152-64-2.jpg?t=124.68%2B32.468%2B524.68%2B724.68%2B9%E8%B0%A2%E8%B0%A2+sorry+%E9%94%99%E4%BA%86%EF%BC%81124.68%2B32.468%2B524.68%2B724.68%2B924.68%E6%B3%A8%E6%84%8F%E7%AC%AC%E4%BA%8C%E4%B8%AA%E7%9A%84%E5%B0%8F%E6%95%B0%E7%82%B9+%E4%B8%8D%E6%98%AF324.68+%E6%98%AF32.468%EF%BC%81)
124.68+32.468+524.68+724.68+9谢谢 sorry 错了!124.68+32.468+524.68+724.68+924.68注意第二个的小数点 不是324.68 是32.468!
124.68+32.468+524.68+724.68+9谢谢
sorry 错了!
124.68+32.468+524.68+724.68+924.68
注意第二个的小数点 不是324.68 是32.468!
124.68+32.468+524.68+724.68+9谢谢 sorry 错了!124.68+32.468+524.68+724.68+924.68注意第二个的小数点 不是324.68 是32.468!
124.68+324.68+524.68+724.68+9
=124.68+200+124.68+400+124.68+600+124.68+9
=124.68*4+1209
原式=(124.68+524.68+724.68)+(32.468+9)
=1300+72+2.04+41.468=1415.508
第一步是分组,并且百位相加,十位和个位相加,
第二步是先算整,再算零。
我想以上两点应该是这道小学奥赛所要考察的内容
124.68+32.468+524.68+724.68+924.68 注意,小数!十位以后的数字相同!
拆分百位数=(100+24.68)+32.468+(500+24.68)+(700+24.68)+(900+24.68)
合并同类项=100+500+700+900+(24.68X4)+32.468
简便算法=2200+(25-0.32)X4+32.468<...
全部展开
124.68+32.468+524.68+724.68+924.68 注意,小数!十位以后的数字相同!
拆分百位数=(100+24.68)+32.468+(500+24.68)+(700+24.68)+(900+24.68)
合并同类项=100+500+700+900+(24.68X4)+32.468
简便算法=2200+(25-0.32)X4+32.468
=2200+100-1.28+32.468
=2331.188
收起