Operations on Integers

A line on which numbers are marked at intervals and it is also used to illustrate simple numerical operations, like addition.

• Horizontal line

• Vertical line

• Number line

The sum of two positive integers is a?

• Positive integer

• Negative integer

• Both positive and negative integer

The sum of two negative integers is a ?

• Positive integer

• Negative integer

• Both positive and negative integers

Find the sum of (-67) and (-84) without a number line.

• -151

• 150

• 151

78 + (-15) is ?

• 93

• 63

• 78

In subtracting two positive integers, when the subtrahend is __________ than the minuend, the difference is always positive.

• Equal

• Bigger

• Smaller

In subtracting two positive integers, when the subtrahend is bigger than the minuend, the difference is always __________.

• Postive

• Negative

• Absolute value

Subtract (9) from (-4).

• 5

• -13

• 20

Subtract (-3) from (-12)

• -15

• 9

• -9

How much is 0 decreased by (-82) ?

• 0

• 82

• -82