人教版四年级数学上册知识点汇总
1四年级数学上册知识点汇总第一单元、大数的认识一、认识数位顺序表数级…亿级万级个级数位…千亿位百亿位十亿位亿位千万位百万位十万位万位千位百位十位个位计数单位…千亿百亿十亿亿千万百万十万万千百十一(个)1、按照我国的计数习惯,从右边起,每四个数位是一级。(例如:个级、万级、亿级。)2、一、个、十、百、千、万、十万、百万、千万、亿、十亿、百亿、千亿等都是计数单位。个级的计数单位有:个、十、百、千。万级的计数单位有:万、十万、百万、千万。亿级的计数单位有:亿、十亿、百亿、千亿。3、计数单位所占的位置叫做数位。个级的数位有:个位、十位、百位、千位。万级的数位有:万位、十万位、百万位、千万位。亿级的数位...
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