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Integers. Magic Squares 9 438 276 951 438 492727 5 86.

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Presentation on theme: "Integers. Magic Squares 9 438 276 951 438 492727 5 86."— Presentation transcript:

1 Integers

2 Magic Squares

3 9 438

4 276 951 438

5 492727 5 86

6 492727 357 816

7 Represent integers with tiles Represent integers with drawings Solve problems Solve integer addition with drawings Use math symbols correctly

8 (shaded= neg. & unshaded=pos.) 1.Write the integer modeled. 2.You have 3 shaded and 4 unshaded tiles. What integer is represented.

9 3. You have 3 shaded and 6 unshaded tiles. What is the least number tiles you need to add to represent -2? What type? 4. You have 7 shaded and 2 unshaded tiles. What is the least number of tiles you need to add to represent -4? What type?

10 5. What sum is modeled by 8 shaded and 1 unshaded tile? 6. How many zero pairs are modeled below?

11 7. How would you need to shade the circles below to represent -5? 8. Model “0” 3 different ways.

12 Adding Integers Add using tiles and drawings Add using symbols (numbers, +, brackets)

13 Write the addition equation. (Copy & do in coil nb) 1. 2. 3. 4. 5.

14 Write the addition equation. (ANSWERS) 1. (+5) + (-2) = (+3) 2. (+2) + (-1) = (+1) 3. (+1) + (-4) = (-3) 4. (+3) + (-1) = (+2) 5. (+4) + (-2) = (+2)

15 Draw each addition equation. (copy & do in coil nb) 1. ( +1 ) + (-2) = 2. ( +2 ) + (+3) = 3. (-3 ) + (-3) = 4. ( -1 ) + (+6) = 5. ( +2 ) + (0) =

16 Draw each addition equation. (ANSWERS) 1. ( +1 ) + (-2) = 2. ( +2 ) + (+3) = 3. (-3 ) + (-3) = 4. ( -1 ) + (+6) = 5. ( +2 ) + (0) =

17 Assignment: Page 55, # 5, 6 Page 58 # 4, 5, 6 If finished, start homework or ask for a hand out.

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