Whole number

A whole number that can be positive, negative, or zero. (not a fractional number)

Examples of Negative NumberThe following are few examples of negative numbers. -

4, - 2,-10

On a number line, numbers to the left of zero are all negative numbers.

(Positive means more than zero. Zero is neither negative nor positive.)

A negative number is written with a minus sign in front

Example: −5 is negative five.

Negative is sometimes abbreviated "−ve"

INTEGERS

What is an integer?

Positive and Negative whole numbers are called integers or directed numbers.

Ordering of Integers

Positive no’s are arranged in ascending orderNegative no’s are arranged in descending order.

Which is greater, -5 or -3?Which is greater, -5 or -3?

Q: Which of the following negative numbers is greater than - 10?

Choices:A. - 9

B. - 11C. - 12D. - 13

Correct Answer: -9

-23, 17, -32, 2, -4, 0

Arrange these no’s -23, 17, -32, 2, -4, 0

Ans : -32 , -23 , -4 , 0 , 2 , 17

order starting with the least. -23, 17, -32, 2, -4, 0order starting with the least. -23, 17, -32, 2, -4, 0Which of these numbers is greater than -6 but less than 4?

-8, -10, 5, -4, 0

Which of these numbers is greater than -6 but less than 4? -8, -10, 5, -4, 0

Ans : -4 ,0

Adding Positive Integers

Integers Sum+2 + +9 = +11+17 + +5 = +22+29 + +16 = +45

Multiplying Two Integers

Integers Product

(+8) (+4) = +32

(+11) (-2) = -22

(-14) (+3) = -42

(-9) (-5) = +45

Multiplying Three Integers

IntegersProduct of First Two

Integers and the Third

Product

(+5) (+3) (+2) = (+15) (+2) = +30

(+8) (+2) (-5) = (+16) (-5) = -80

(-6) (+3) (+4) = (-18) (+4) = -72

(-9) (-3) (+2) = (+27) (+2) = +54

(-4) (-3) (-5) = (+12) (-5) = -60

If both the dividend and divisor are positive, the quotient will be positive.

(+16) ÷ (+4) = +4 If both the dividend and divisor are negative, the quotient will be positive.

(-16) ÷ (-4) = +4 If only one of the dividend or divisor is negative, the quotient will be negative.

(+16) ÷ (-4) = -4     or  (-16) ÷ (+4) = -4 In other words, if the signs are the same the quotient will be positive, if they are different, the quotient will be negative.

Only practice can make you perfect.