Algebra Tiles Activity 1: Adding Integers

Algebra TilesActivity 2: Subtracting IntegersWe are going to use positive (yellow) and negative (red) tiles to discover the rules foradding and subtracting integers. Each tile has a value of 1 or –1.When you subtract with tiles, you remove the tiles that are being subtracted. What remainsis your answer.5 – 3 = + + + + += 2A. Try the following subtractions with the tiles. Draw the tiles and find the integer answer.ModelAnswer1. 3 – 12. –5 – (–2)3. 6 – 44. Using tiles, can you do the following? 4 – 7At first it appears not, but you can subtract more than you have by introducing zero pairs untilyou have enough.Step 1: Start with 4 tiles.Step 2: Introduce 3 zero pairs+ + + + = + + + + +–+–+–Step 3: Remove the 7 positive tiles. This leaves 3 negative tiles, which is your answer.+ + + + +–+–+–