Interesting Integers! REVIEW

You have learned lots of things About adding and subtracting Integers. Let’s review!

Integer Addition Rules Rule #1 – If the signs are the same, pretend the signs aren’t there. Add the numbers and then put the sign of the addends in front of your answer. 9 + 5 = 14 -9 + -5 = -14

Integer Addition Rules Rule #2 – If the signs are different pretend the signs aren’t there. Subtract the smaller from the larger one and put the sign of the one with the larger absolute value in front of your answer. -9 + +5 = Larger abs. value Answer = - 4 9 - 5 = 4

One Way to Add Integers Is With a Number Line When the number is positive, count to the right. When the number is negative, count to the left. - + 1 2 3 4 5 6 -1 -2 -3 -4 -5 -6

Integer Subtraction Rule Subtracting a negative number is the same as adding a positive. Change the signs and add. 2 – (-7) is the same as 2 + (+7) 2 + 7 = 9!

Formative Order least to greatest -10 0 8 -14 22 -1.2 1.3 Solve -10 0 8 -14 22 -1.2 1.3 Solve -15 + 8 = -4 - -4 = 5 + -3 = -4 - +6 =

Homework Based on formative results-from textbook Ordering and comparing – pg 56 #38, #39 Adding pg 60 #6 through #11 all Subtracting pg 66 #29 through 34 all