Addition: Two 1-Digit Numbers (Sum ≤ 10) – Basic 1 Mathematics Lesson Note (First Term)

What is Addition? Addition means putting numbers together to find the total. We use the + sign to add.

Simple Addition:

• 2 + 3 = 5
• 1 + 4 = 5
• 3 + 2 = 5
• 4 + 1 = 5

Exercise 10: Add these numbers:

1. 2 + 1 = ___
2. 3 + 3 = ___
3. 1 + 5 = ___
4. 4 + 2 = ___
5. 0 + 7 = ___

Exercise 11: Complete the addition:

1. 🍎🍎 + 🍎🍎🍎 = ___
2. ⭐⭐⭐ + ⭐⭐ = ___
3. 🏀🏀🏀🏀 + 🏀 = ___

5. Zero property

Zero Property: When you add 0 to any number, the answer is the same number.

• 5 + 0 = 5
• 0 + 3 = 3
• 8 + 0 = 8

Exercise 12: Complete using zero property:

1. 4 + 0 = ___
2. 0 + 7 = ___
3. 6 + 0 = ___
4. 0 + 9 = ___
5. 2 + 0 = ___

6. Concept of doubles

What are Doubles? Doubles means adding the same number to itself.

• 1 + 1 = 2
• 2 + 2 = 4
• 3 + 3 = 6
• 4 + 4 = 8
• 5 + 5 = 10

Exercise 13: Complete the doubles:

1. 1 + 1 = ___
2. 2 + 2 = ___
3. 3 + 3 = ___
4. 4 + 4 = ___
5. 5 + 5 = ___

Exercise 14: Write the doubles:

1. Double of 2 = ___
2. Double of 4 = ___
3. Double of 1 = ___
4. Double of 5 = ___

7. Count forward

Counting Forward: Start from any number and count up.

Exercise 15: Count forward from these numbers:

1. From 23: ___, ___, ___, ___
2. From 47: ___, ___, ___, ___
3. From 35: ___, ___, ___, ___
4. From 58: ___, ___

Exercise 16: What comes next?

1. 34, 35, ___
2. 52, 53, ___
3. 19, 20, ___
4. 46, 47, ___

Homework

1. Practice counting from 51 to 60 and back to 51
2. Write numbers 51-60 five times each
3. Practice addition problems with sums up to 10
4. Find doubles around your house (2 shoes, 4 wheels on 2 cars, etc.)
5. Practice counting forward from different numbers

Teacher: Use counting objects, fingers, and visual aids to demonstrate addition and doubles concepts