判断题,计数单位就是位数,

3个回答

像一（个）、十、百、千、万、十万……等,叫做数的计数单位.小数的计数单位有0.1,0.01,0.001,0.0001,0.00001等.
位数是一个自然数包含有数位的个数.比如个位数包含1个数位,两位数包含有2个数位.有几个数位就是几位数,也就是位数是几.