Addition on a Number Line
A number line is a straight line with numbers written in order. We can use it to add by jumping forward.
To add on a number line: start at the first number and jump right as many times as the second number. Where you land is the answer.
What is Addition on a Number Line - Class 1 Maths (Addition (Grade 1))?
Adding on a number line means:
- Find the first number on the number line.
- Jump forward (to the right) by the second number.
- The number where you land is the sum.
0 — 1 — 2 — 3 — 4 — 5 — 6 — 7 — 8 — 9 — 10
Solved Examples
Example 1: 3 + 4 on the Number Line
Question: Show 3 + 4 on a number line.
Think:
- Start at 3
- Jump forward 4 times: 4, 5, 6, 7
0 — 1 — 2 — 3 → 4 → 5 → 6 → 7
Answer: 3 + 4 = 7.
Example 2: 5 + 3 on the Number Line
Question: Find 5 + 3 using a number line.
Think:
- Start at 5
- Jump 3 times: 6, 7, 8
0 — 1 — 2 — 3 — 4 — 5 → 6 → 7 → 8
Answer: 5 + 3 = 8.
Example 3: 7 + 2
Question: What is 7 + 2? Use the number line.
Think:
- Start at 7
- Jump 2 times: 8, 9
... 5 — 6 — 7 → 8 → 9
Answer: 7 + 2 = 9.
Example 4: 6 + 0
Question: Show 6 + 0 on the number line.
Think:
- Start at 6
- Jump 0 times (no jump)
- Stay at 6
Answer: 6 + 0 = 6. No jump needed.
Example 5: 1 + 8
Question: Find 1 + 8 on the number line.
Think:
- Start at 8 (bigger number first for fewer jumps)
- Jump 1 time: 9
... 6 — 7 — 8 → 9
Answer: 1 + 8 = 9.
Example 6: Aman's Jumps
Question: Aman stands at number 4 on a number line. He jumps 5 places forward. Where does he land?
Think:
- Start at 4
- Jump 5: 5, 6, 7, 8, 9
Answer: Aman lands on 9. So 4 + 5 = 9.
Example 7: 8 + 4 on an Extended Number Line
Question: Find 8 + 4 on the number line.
Think:
- Start at 8
- Jump 4 times: 9, 10, 11, 12
... 7 — 8 → 9 → 10 → 11 → 12
Answer: 8 + 4 = 12.
Key Points to Remember
- A number line shows numbers in order from left (small) to right (big).
- To add: start at the first number, jump right by the second number.
- Each jump moves to the next number.
- Adding 0 = no jump.
- Tip: Start from the bigger number to make fewer jumps.
Practice Problems
- Show 2 + 6 on a number line. Where do you land?
- Use a number line to find 4 + 5.
- Ria starts at 9 and jumps 1 step forward. Where does she land?
- Show 0 + 7 on a number line.
- Use a number line to solve: 6 + 6 = ___.
- Draw a number line from 0 to 15 and show 7 + 5.
Frequently Asked Questions
Q1. How do I add on a number line?
Start at the first number. Then jump to the right as many times as the second number. The number you land on is the answer.
Q2. Which direction do I jump for addition?
Jump to the RIGHT. Going right on a number line makes numbers bigger, which is what addition does.
Q3. Can I start from the bigger number?
Yes. Starting from the bigger number means fewer jumps. For 2 + 7, start at 7 and jump 2 (to 8, 9) instead of starting at 2 and jumping 7 times.
Q4. What if my number line is too short?
Extend it. If you need 8 + 7, draw the number line from 0 to at least 15.
Q5. What happens when I add 0 on the number line?
You make 0 jumps. You stay at the starting number. So 5 + 0 = 5.
Q6. Why is the number line helpful?
It lets you see addition as movement. You can count the jumps and land on the right answer every time.
