20到28之间的数数集是多少?
我们从幼儿园开始以各种形式学习数字,例如计算班级男孩人数,学习操作。数字在数学和日常生活中都很重要,没有数字就不可能完成许多任务,例如告诉时间、告诉我们的年龄等等。
数字是数学的重要组成部分。它用于根据输入或给定数据执行不同的操作以计算结果,也用于日常生活中。
什么是数字系统?
它是使用数字或符号表示的数字。它分为自然数、整数、整数和分数等类别。
数字分为许多类别
- 自然数(N):这些 是我们在早期课程中学习的基本数字。自然数只是一个正整数。它也被称为计数,这些总是正数并且可以计数。自然数的例子有1,2,3,4,5,6,7,8,9,10……
- 整数(W):当零也包括在计数中时,它被称为整数。整数的例子是 0,1,2,3,4,56,7,8,9……
- 整数 (Z):除小数或分数以外的任何数字都称为整数,它可以是负数、正数或零。整数的例子是 -5,-1,0,2,6…..
- 分数:除整数以外,可以写成 x/y 形式的数字都是分数。分数的例子有 -1/2、2/3、3/5……(y,不能为零)
找到一组计数的步骤:
第 1 步:写出较低值的计数集。
第 2 步:写出较高值的计数集。
第 3 步:消除公共部分,不包括给定的数字。
问题:20 到 28 之间的数数集是多少?
回答:
Step 1: Write the set of counting numbers for 20.
{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}.
Step 2: Write the set of counting numbers for the 28.
{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28}.
Step 3: Eliminate the common parts, excluding the given numbers.
{20,21,22,23,24,25,26,27,28}.
The set of counting between 20 and 28 are {20,21,22,23,24,25,26,27,28}.
Hence, the set of counting between 20 and 28 are {20,21,22,23,24,25,26,27,28}.
类似问题
问题 1) 5 到 10 之间的计数集是什么?
回答:
Step 1: Write the set of counting numbers for 5.
{1,2,3,4,5}
Step 2: Write the set of counting numbers for the 10.
{1,2,3,4,5,6,7,8,9,10}
Step 3: Eliminate the common parts, excluding the given numbers.
{5,6,7,8,9,10}
The set of counting between 5 and 10 are {5,6,7,8,9,10}.
Hence, the set of counting between 5 and 10 are {5,6,7,8,9,10}.
问题 2:5 到 10 之间的数集是什么?
回答:
Step 1: Write the set of counting numbers for 5.
{1,2,3,4,5}.
Step 2: Write the set of counting numbers for the 15.
{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}.
Step 3: Eliminate the common parts, excluding the given numbers.
{5,6,7,8,9,10,11,12,13,14,15}.
The set of counting between 5 and 10 are {5,6,7,8,9,10,11,12,13,14,15}.
Hence, the set of counting between 5 and 10 are {5,6,7,8,9,10,11,12,13,14,15}.