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Integers and Number Lines

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Integers and Number Lines

Number line with positive and negative integers

🎯 WALT (We Are Learning To)

• Understand what integers are and identify positive and negative numbers

• Locate and represent integers on a number line

• Recognise integers in real-life situations

📚 Part 1: Understanding Integers

1. Which of these are integers? (Tick all that apply)

-5

0

3.5

+7

2. What is the integer that represents 3 degrees below zero?

+3°C

-3°C

0°C

3°C

3. If you owe $8, which integer represents this situation?

+8

-8

0

8

📍 Part 2: Number Line Activities

4. Complete this number line by filling in the missing integers:

-5, ____, -3, ____, -1, ____, +1, ____, +3, ____

5. Mark these integers on the number line below:

Integers to plot: -6, +2, -1, +4, 0

6. Which integer is greater?

a) -4 or +1? Answer: ____

b) -2 or -7? Answer: ____

c) 0 or -3? Answer: ____

🌡️ Part 3: Real-Life Integers

7. The temperature in Melbourne was 5°C in the morning. By evening, it dropped by 8 degrees. What is the evening temperature?

Evening temperature: ____°C

8. Sarah has $15 in her bank account. She spends $20 on a book. Write an integer to show how much money she has now.

Sarah now has: $____

9. A lift is on the ground floor (0). Write the integer for each situation:

a) 3 floors above ground: ____

b) 2 floors below ground (basement): ____

c) Back to ground floor: ____

10. Extension Challenge: Put these integers in order from smallest to largest:

+3, -8, 0, -2, +7, -1, +5

11. Explain in your own words: What is an integer? Give two examples from real life.

Remember: Positive integers are greater than zero (+1, +2, +3...) and negative integers are less than zero (-1, -2, -3...)

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