Subtracting 8
key notes :
🎈 What is Subtracting 8?
Subtracting 8 means taking away 8 from a number.
👉 Example: 12 − 8 = 4
🎨 Use Pictures to Understand
Kids can imagine removing 8 objects 🍎🍎🍎🍎🍎🍎🍎🍎
👉 If you have 10 apples 🍏 and remove 8, only 2 apples are left.
🧮 Counting Back Strategy
Start from the big number and count back 8 steps 👣
Example:
Start at 15, count back 8 → 14, 13, 12, 11, 10, 9, 8, 7 🎯
So, 15 − 8 = 7
🌟 Number Line Helps
Use a number line ➖➡️
Jump 8 steps back to find the answer.
Example:
Start at 18, jump back 8 → you land on 10.
🍭 Subtracting 8 Facts to Remember
These are quick facts that students can practice:
- 10 − 8 = 2 🎉
- 12 − 8 = 4
- 14 − 8 = 6
- 16 − 8 = 8
- 20 − 8 = 12
🎯 Word Problems (Simple)
🌻 Rani has 13 balloons. She gave 8 to her friend. How many are left?
👉 13 − 8 = 5 balloons 🎈🎈🎈🎈🎈
🧠 Tips for Students
✨ Always start from the bigger number
✨ Count backwards slowly
✨ Use fingers, counters, or pictures
✨ Practice makes you faster 💪😊
Learn with an example
✈️Subtract. 9 – 8 =
- You can count on to find 9–8. Start at 8. Count on until you reach 9.
- You counted on 1 time.
- 9 – 8 = 1
✈️Subtract. 11 – 8 =
- You can count on to find 11 – 8. Start at 8. Count on until you reach 11.
- You counted on 3 times.
- 11 – 8 = 3
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- You can also use 10 to find 11 – 8.
- Start at 11. Subtract 1 to get to 10. Then subtract 7 more. That way, you subtract 8 in all.
- You end at 3.
- 11 – 8 = 3
✈️Subtract. 15 – 8 =
- You can count back to find 15 – 8. Start at 15 and count back 8 times.
- You end at 7.
- 15 – 8 = 7
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- You can also use 10 to find 15 – 8.
- Start at 15. Subtract 5 to get to 10. Then subtract 3 more. That way, you subtract 8 in all.
- You end at 7.
- 15 – 8 = 7
Let’s practice!
