Intro To Adding Integers

Finding The Sum of Positive Integers When finding the sum of positive integers you add the numbers and keep the positive sign.

Net Result Positive 9 (+5) + (+4) = +9 Or (+4) + (+5) = +9

Finding The Sum of Negative Integers When finding the sum of negative integers you add the numbers and keep the negative sign.

Net Result Negative 10 (-3) + (-7) = -10 Or (-7) + (-3) = -10

Finding The Sum of a Positive and a Negative Integer When finding the sum of a positive and a negative integer you subtract the numbers and keep the sign of the integer with the largest absolute value.

Net Result Positive 2 (+7) + (-5) = +2 Or (-5) + (+7) = +2

Net Result Zero (+5) + (-5) = 0 Or (-5) + (+5) = 0

Integer Recap You Have or Positive symbol means You’ve Earned Negative symbol means A positive and a negative equals zero! You Owe

(+3) + (-7) (-5) + (-2) (-3) + (-6) + (+4) (+3) + (-2) + (+2)

(+50) + (-100) (-25) + (+10) -60 + -20 -20 + 15 30 + -5

Rules For Adding Integers Positive Integers To add two positive integers you add the numbers and keep the positive sign. Negative Integers To add two negative integers you add the numbers and keep the negative sign. A Negative and a Positive Integer To add a positive and a negative integer you subtract the numbers and keep the sign of the integer with the largest absolute value.

Intro To Subtracting Integers

(+5) – (+3) = +2 (+5) – (+3) =

(-6) – (-2) = -4 (-6) – (-2) =

(+3) – (+5) = -2 (+3) – (+5) =

(-2) – (-6) = +4 (-2) – (-6) =

(+3) – (-2) = +5 (+3) – (-2) =

(+1) – (+4) = -3 (+1) – (+4) =

(-5) – (+3) = -8 (-5) – (+3) =

(-2) – (-5) = +3 (-2) – (-5) =

Try These (-8) – (-3) = (+4) – (-5) = (-4) – (-5) = (+1) – (-6) = (-5) – (+6) = (-2) – (-3) = (-20) – (-10) = (+30) – (-3) = (-20) – (-30) =

Try These (-3) – (-2) = (+6) – (-2) = (-1) – (-4) = (+3) – (-2) = (-5) – (+2) = (-2) – (-4) = (-30) – (-20) = (+50) – (-10) = (-20) – (-30) =

Try These (-5) + (+2) = (+6) + (-2) = (-2) – (-6) = (+7) + (-2) = (+8) + (-4) = (-3) – (+6) = (+50) – (-10) = (-20) + (-30) =

Try These (-5) + (+2) = -3 (+6) + (-2) = +4 (-2) – (-6) = +4 (+7) + (-2) = +5 (+8) + (-4) = +4 (-3) – (+6) = -9 (+50) – (-10) = +60 (-20) + (-30) = -50

Multiplying and Dividing Integers

(+2) x (+4) = +8 (+2) x (+4) = This means you have two sets of four positive tiles or you have earned two groups of four dollars.

(+2) x (-4) = -8 (+2) x (-4) = This means you have two sets of four negative tiles or you have two bills that you owe,each bill is for four dollars.

(-2) x (-4) = +8 (-2) x (-4) = This means you don’t have two sets of four negative tiles or you don’t owe two bills, each bill is for four dollars.

(-2) x (+4) = -8 (-2) x (+4) = This means you don’t have two sets of four positive tiles or you don’t have two groups of four dollars.

Try These (+3) x (-2) = (-2) x (-2) = (+5) x (-2) = (-3) x (+2) =

Try These (-91) x (-101) = (+152) x (-21) = (-19) x (+203) =

Try These (-91) x (-101) = (+152) x (-21) = (-19) x (+203) =

Multiplying Integers FACTOR PRODUCT + _

Dividing Integers DIVIDEND DIVISOR QUOTIENT + _