RootsEDU小学课程图谱与学习系统
数学 / Mathematics 数的表示与位值 / Number Representation & Place Value PROCEDURAL 8 至 9 岁

多1000或少1000

1000 More or Less

求比一个已知数多1000或少1000的数

Find 1000 more or less than a given number

学习证据 / Evidence

评估问题 / Assessment

{{name}}能快速心算出“比3456多1000”或“比7200少1000”,并知道只有千位上的数字会改变吗?

Can {{name}} quickly work out '1,000 more than 3,456' or '1,000 less than 7,200' in their head — knowing only the thousands digit changes?

先修关系图 / Learning path