🎓 Fast Subtraction Tricks – Year 3 (ACARA Code : AC9M3N03)
🎯Focus:
⚡Learn subtraction shortcuts
🔢 Add or subtract the same number to simplify
🧠 Strengthen mental math skills
📚 Year 3 Australian Curriculum – Number and Algebra aligned
Key Ideas (Quick Guide)
- Subtracting large numbers can be simplified
- Add/subtract same number to both numbers
- The difference stays the same
- Perfect for mental math practice
🎥Video Lessons
💡 Video Tips:
🧠 Pause to calculate mentally
🔢 Adjust numbers in subtraction to simplify
✅ Check results with normal subtraction
🍎💰 Practice with real-life examples
🧩 Mini Quiz – Quick Check
Try these after watching the video:
❓Question 1: 534 – 395 → add 5 to both numbers, what is the new subtraction?
✅ Answer: 539 – 400 = 139
❓Question 2: 627 – 289 → add 11 to both numbers = ?
✅ Answer: 638 – 300 = 338
❓Question 3: True or False: Adding same number to both keeps the difference ✅/❌
✅ Answer: True
❓Question 4: Shortcut helps with a) Subtraction b) Multiplication c) Division
✅ Answer: Subtraction
❓Question 5: 500 – 400 = ?
✅ Answer: 100
📄 Sample Worksheet Preview
Fast-Math-Tricks-for-Subtraction-Mental-Math-Shortcuts-Explained-AC9M3N03📥 Download Free Printable 6 Worksheet Pack
🎉 The preview above is just 1 sample.
Sign up with your email to receive the full pack of 6 worksheets.