Absolutely! Let’s solve this addition worksheet step by step and explain the reasoning behind each problem.
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🎯 Main Concept: Commutative Property of Addition
The worksheet is teaching a very important math idea:
>
The order in which you add two numbers doesn’t change the sum.
This is called the
commutative property of addition:
>
a + b = b + a
The dragon says: *“When adding, it’s easier to start with the bigger number and add on the smaller number.”*
This is a helpful strategy — for example, starting with 6 and counting up 3 is often easier than starting with 3 and counting up 6.
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## ✏️ Let’s Solve Each Problem
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1. 3 + 6 = ? and 6 + 3 = ?
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3 + 6: Start at 3, count up 6 → 4, 5, 6, 7, 8, 9 →
Answer: 9
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6 + 3: Start at 6, count up 3 → 7, 8, 9 →
Answer: 9
✔ Both equal
9 — same answer!
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2. 2 + 7 = ? and 7 + 2 = ?
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2 + 7: Start at 2, count up 7 → 3, 4, 5, 6, 7, 8, 9 →
Answer: 9
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7 + 2: Start at 7, count up 2 → 8, 9 →
Answer: 9
✔ Both equal
9
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3. 1 + 8 = ? and 8 + 1 = ?
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1 + 8: Start at 1, count up 8 → 2, 3, 4, 5, 6, 7, 8, 9 →
Answer: 9
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8 + 1: Start at 8, count up 1 → 9 →
Answer: 9
✔ Both equal
9
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## 🧠 Why This Matters
This worksheet helps children:
- Learn that
addition is commutative (order doesn’t matter).
- Practice
mental math strategies — like starting with the larger number to make counting easier.
- Build
number sense and confidence with basic facts.
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##
✔ Final Answers:
1.
3 + 6 = 9 6 + 3 = 9
2.
2 + 7 = 9 7 + 2 = 9
3.
1 + 8 = 9 8 + 1 = 9
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🌟
Bonus Tip: You can use the number line shown at the top to visualize these additions — just start at the first number and hop forward the second number of spaces!
Let me know if you’d like to practice more problems like this! 😊
Parent Tip: Review the logic above to help your child master the concept of printable maths worksheet ks1.
