Adding
-5 + 5
0
-5 - 4
-9
-1 x 1
-1
-10 ÷ -2
5
Name the three methods to solve subtracting with integers problems.
-Using Counters
-Using Number lines
-Keep Change Change
-10 + 6
-4
5 - 7
-2
4 x (-2)
-8
-12 ÷ 4
-3
What is the tic tac toe trick? Write it on your whiteboard.
Positive ÷ Negative = Negative
Negative ÷ Positive = Negative
Negative ÷ Negative = Negative
9 + (-12)
-3
8 - 18
-10
5(-6)
-30
-28 ÷ -4
7
Sarah bought a bike that costs $260. She had a coupon that was worth $55 off any bike. How much did Sarah pay for her bike?
260 + (-55) = 205, $205
8 + (-15)
-7
-7 - 20
-27
-7 x -3
21
-55 ÷ -5
11
Ian's football team lost 2 yards on a running play. Then they received a 5 yard penalty. What is the teams total change in yards?
-2 - 5 = -7; they lost 7 yards
-30 + 17
-13
-12 - (-6)
-6
-2 x 3 x -4
24
-36 ÷ 4
-9
A race car game takes 4 points from a player each time the player hits a cone. What integer represents the change in total points if the player hits 8 cones?
-4 x 8 = -32