Positive and Negative Integers Addition and Subtraction

subtracting integers (rule)

• subtract their absolute value; keep the sign of the integer with the higher absolute value

• add their absolute value and keep the sign of the integers

• change subtraction sign (between the integers) to an addition sign and change the sign of the integer following it to its opposite (if it was positive, make it negative; if it was negative, make it positive); then solve

adding integers with the SAME sign

• add their absolute value and keep the sign of the integers

• subtract their absolute value; keep the sign of the integer with the higher absolute value

• change subtraction sign (between the integers) to an addition sign and change the sign of the integer following it to its opposite (if it was positive, make it negative; if it was negative, make it positive); then solve

_____ is/are set of whole numbers and its opposites

________ is the reverse operation of addition.

When we add a positive integer and a negative integer, we have to perform subtraction on the absolute value of each integer, then copy the symbol of the _(biggger or smaller)_ number

12 - 19

• 7

• -7

• 31

• -31

73 + (-73)

• 73

• 146

• -146

• 0

7 + 6 + (-18)

• -5

• 5

• 31

• -31

(-22) - (-14) + 3

• 11

• 39

• -5

• -33

________ integers are whole numbers greater than zero. These numbers are to the right of zero on the number line.