4392+2997简便方法
4392+2997简便方法 -
=(4400-8)+(3000-3)=4400+3000-8-3 =7400-11 =7389复制搜索复制搜索,
4392+2997 =4392+3000-3 =7389
=(4400-8)+(3000-3)=4400+3000-8-3 =7400-11 =7389复制搜索复制搜索,
4392+2997 =4392+3000-3 =7389
回答:4392+2997 =(4400-8)+(3000-3) =4400-8+3000-3 =7400-11 =7389
4392+3000-3=7389 或4400-8+3000-3=7389 或4380+12+3000-3=7380+9=7389
4392-2997=?请你用简便方法计算。 -
4392-2997 =4392-(3000-3)4392-3000+3 =1392+3 =1395
回答:4392+(3000-3)=7了89
4392-2997=?请你用简便方法计算。 -
4392-3000+3
4392+2997=4392+3000-3=7392-3=7389或者4392+2997=(4400-8)+(3000-3) =4400+3000-8-3 =7400-11 =7389
4392加2997用简便方法计算 -
4392+2997 =4392+3000-3 =7389
答案 7389