Opening Activity Evaluate the following in your spiral on your Adding Positive and Negative Integers page. Write both the expression and the answer. 5 + (-8) -3 + (-9) -6 + 9 -4 + (-1) Have homework out and ready to be checked. You will need your spiral, pencil and a sheet of notebook paper.

Homework Check 56 -8 25 -14 -95 3 -7 200 100

Unit 1.3 Subtracting Integers

Table of contents Date Lesson Page # Unit 8/24 Multiplication Table 1 Divisibility Rules 2 8/25 Adding Positive and Negative Integers 3 1 8/28 Subtracting Positive and Negative Integers 1

Learning Goals LG 702: Students will be able to apply and extend previous understandings of operations to add and subtract rational numbers. LG 703: Apply and extend previous understandings of operations to multiply and divide rational numbers.

What are we doing today? Today I am working with integers. So that I can subtract integers with the same or different signs. I’ll know I’ve got it if I can accurately solve the following expression. 7 – (-16)

Subtracting Using Counters Page 19

Subtracting Using Counters – Page 19 How can you take away negative counters if there aren’t any?

Subtracting Using Counters – Page 19 2 negative 5 negative 3 5 negative 3 positive 3 X X X X X

Subtracting on a Number Line Page 20

Subtracting on a Number Line Page 20 -5 -1 5 -6 3 -7 3 right -4

Subtracting Integers by Adding the Opposite – Page 21 Math on the Spot This video is from your textbook. These are available when you scan the QR codes on the pages of your book and are available in every lesson.

Subtracting Integers by Adding the Opposite – Page 21

Keep Change Change - 18 – 4 7 – (-5) -18 + (-4) 7 + 5 -22 12 When you subtract integers, you Keep Change Change (KCC). Keep the sign of the first number. Change the operation (subtraction to addition) Change the sign of the second number (from positive to negative or negative to positive) - 18 – 4 7 – (-5) -18 + (-4) 7 + 5 -22 12

Keep Change Change

Adding & Subtracting Integers Georgina works on the 30th floor of an office building. She took the elevator to the cafeteria on the 7th floor. How many floors did she travel? 23 floors Gina had a balance of -$18 in her savings account. After making a deposit, she has $14 in her account. What is the overall change to her account? $32

Exit Slip, Part 1

Exit Slip, Part 2

Homework Page 23, #16-19 Due at the start of next class.