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Integer Addition and Subtraction
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Integer Addition and Subtraction
📊 Part 1: Understanding Integers
1. Which of the following are integers? (Circle all that apply)
-5
3.5
0
7
-12
2. What is the opposite of -8?
-8
8
0
16
3. Calculate: (-3) + 7 = ________
4. Calculate: 5 + (-9) = ________
5. Calculate: (-4) - 6 = ________
🌡️ Part 2: Real-World Integer Problems
6. Temperature Problem: The temperature in Queenstown was -2°C at 6am. During the day it rose 9°C. What was the temperature at the end of the day?
Answer: ________ °C
7. Elevation Problem: A diver starts at sea level (0 metres) and descends 15 metres. Then they swim up 8 metres. What is their final position relative to sea level?
Answer: ________ metres
8. Bank Account Problem: Sarah's account balance was -$25 (overdrawn). She deposited $40. What is her new balance?
Answer: $________
✏️ Part 3: Show Your Understanding
9. Use the number line below to show how to solve (-6) + 4. Draw arrows to show your movement.
Answer: ________
10. Explain in your own words: How do you add a positive integer to a negative integer? Give an example.
11. Challenge Problem: Calculate (-15) + 8 - (-3) + (-7)
Answer: ________
Success Criteria Check:
I can identify integers and their opposites
I can add and subtract integers correctly
I can use a number line to show integer operations
I can solve real-world problems involving integers
I can explain my mathematical reasoning
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