什么是整数?
数字是社会世界中金融、专业以及社会领域中使用的数学数字。数字中的位数和位值以及数字系统的基数决定了数字的值。数字用于各种数学运算,如加法、减法、乘法、除法、百分比等,这些运算用于我们的日常业务和交易活动。
Numbers are the mathematical figures or values applicable for counting, measuring, and other arithmetic calculations. Some examples of numbers are integers, whole numbers, natural numbers, rational and irrational numbers, etc.
数字系统是一种将数字表达为不同形式的标准化方法,即数字和文字。它包括不同类型的数,例如素数、奇数、偶数、有理数、整数等。这些数可以根据所使用的数系以形式表示。
The number system includes different types of numbers for example prime numbers, odd numbers, even numbers, rational numbers, whole numbers, etc. These numbers can be expressed in the form of figures as well as words accordingly.
例如,40、65等以数字形式表示的数字,也可以写成40、65。
表示数字的基本系统称为数字系统。它是数字表示的标准化方法,其中数字以算术和代数结构表示。
数字类型
有不同类型的数字按数字系统分类。类型描述如下:
- 自然数:自然数从 1 到无穷大。它们是用' N '表示的正计数数。这是我们通常用于计数的数字。自然数集合可以表示为 N = {1,2,3,4,5,6,7,………………}
- 整数:整数从零到无穷大。整数不包括分数或小数。整数集由“ W ”表示。该集合可以表示为 W={0,1,2,3,4,5,………………}
- 有理数:有理数是可以表示为两个整数之比的数。它包括所有整数,可以用分数或小数表示,用“ Q ”表示。
- 无理数:无理数是不能用分数或整数比表示的数字。它可以写成小数,小数点后有无穷无尽的不重复数字。它们由“ P ”表示。
- 整数:整数是一组数字,包括所有正数、零以及从负无穷到正无穷的所有负数。该集合不包括分数和小数。整数集由“ Z ”表示。示例:Z={…………..,-5.-4,-3,-2,-1,0,1,2,3,4,5,………….}
- 十进制数:任何由小数点组成的数值都是十进制数。可以表示为2.5、0.567等。
- 实数:不包括任何虚数并且是所有正整数、负整数、分数和十进制值的组成部分的数字集合是实数。一般用“ R ”表示。
- 复数:它们是一组数字,其中包括虚数是复数。它可以表示为 a+bi,其中“a”和“b”是实数。它用' C '表示。
什么是整数?
回答:
The subset of the number system that consists of all positive integers including 0 is defined as a whole number. The whole number counts from zero to positive infinity. These numbers are mostly used for counting, measurement of fundamental quantities, and daily calculations.
Whole numbers are the only constituents of natural numbers including zero. The subset is given by {0,1,2,3,4,5,……….}, the set does not include fractions, decimals, and negative integers.
Hence the standard form of whole number is 0, 1, 2, 3, 4, 90,…..
Examples of Whole Numbers
Positive integers are also known as counting numbers including zero are part of whole numbers, such as 0,1,2,3,4,5, etc, excluding negative integers, fractions, and decimals. 12, 120, 1200, etc all are examples of whole numbers.
12, 120, 1200, etc all are examples of whole numbers.
332 is a whole number as it’s a positive integer
-214 is not a whole number as it’s not a positive integer
2.23 is not a whole number as it’s a decimal value
3/15 is not a whole number as it’s a fraction
示例问题
问题1:17是整数吗?
回答:
Since, the whole numbers are set of real numbers that include zero and all positive counting numbers whereas, excludes fractions, negative integers, and decimals. For example 0,1,2,3,4,5,etc.
Therefore, 17 being a part of real numbers is a whole number.
问题2:举一些整数的例子?
回答:
2, 4, 6,8,45, 55, 78, 100 and so on are the examples of whole numbers.
问题 3:22.5 是整数吗?
回答:
No, 22.5 is not a whole number as its a fractional value and whole number doesn’t include fraction.
问题4:确定3.5是不是整数?
回答:
The whole numbers are a set of real numbers that include zero and all positive counting numbers. Whereas, excludes fractions, negative integers, and decimals. Hence 3.5 being a decimal value is not a whole number