What are Integers

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Integers are also known as counting numbers and they include not only positive counting numbers, but also negative counting numbers along with ‘0’. Integers are family of numbers where fractional parts or decimal parts of numbers are not included. This implies that integers are numbers which are complete within themselves only and they can have positive sign or a negative sign in front of them. Examples of integers are 0, -10, 15, 4, 20, -6, -100, 24, -19, 2, -3 etc.

Example 1: Are the numbers in the given numerical expression, 2 – 3 + 5 + 7 – 10 integers? Calculate the
value of the numerical expression.

Given numerical expression: 2 – 3 + 5 + 7 – 10

The numbers in the above given expression consist of positive and negative signs and the expression does

not contain any fractions or decimals.

Hence yes, the given numbers are all integers!

In order to calculate the value of the given expression, we calculate from left to right.

This gives, 2 – 3 + 5 + 7 – 10 = 1

Example 2: Are the numbers in the given numerical expression, (3* 4) + (2* 1) – (6* 3) integers? Calculate the value of the numerical expression.

Given numerical expression: (3* 4) + (2* 1) – (6* 3)

Yes, the given numbers are all integers since they are no fractions or decimals included.

According to the order of operations, first calculate the numbers inside the parenthesis, then multiply and

then later add/subtract.

This gives, (3* 4) + (2* 1) – (6* 3) = 12 + 2 – 18= 14- 18= -4 is the answer!
 
 
 


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