Addition (Continued)
Addition (Continued)
Primary 1 · Mathematics · First Term · Week 8
By the end of this lesson, pupils should be able to:
- Add two numbers with a total up to 10
- State the rule for adding zero to a number
- Solve simple word problems involving addition up to 10
- Use counters to work out addition sums
Adding Within 10
Now the numbers grow, and counters — stones, buttons, bottle tops — become genuinely useful. To solve 5 + 3: make a group of 5 counters, make a separate group of 3, push the two groups together, then count everything in the combined group: “1, 2, 3, 4, 5, 6, 7, 8.” The total is 8, so 5 + 3 = 8.
A number line works just as well: start at 5, hop forward 3 spaces, and land on 8.
The Rule for Adding Zero
Zero has a special job in addition — it never changes the number it’s added to. Any number plus zero equals that same number. If you have 4 toys and get 0 new toys, you still have exactly 4 toys: 4 + 0 = 4.
Word Problems Within 10
Read carefully, find the two numbers being combined, and add them. Example: “Ada has 6 yams in a basket. Her mother adds 2 more. How many yams are in the basket now?” Numbers: 6 and 2. Operation: adding, since more is being put in. Solution: 6 + 2 = 8 yams.
A Useful Trick: Making Ten
For 6 + 4, hold up 6 fingers on one hand and 4 on the other — count all fingers together to get 10. Noticing that 6 needs 4 more to reach a full ten is a strategy that pays off again and again in later maths.
Evaluation
- What is 5 + 2?
- What is 7 + 0?
- Add: 4 + 4.
- “One hen lays 3 eggs, another lays 3 eggs. How many eggs in total?”
- Use counters to find the answer to 6 + 4.
Assignment
- Solve: 5 + 5 = ?
- Solve: 8 + 0 = ?
- “Mom bought 4 bananas. Dad bought 3 bananas. How many altogether?”