The Number Zero
Zero (0) is a very special number. It means nothing — no objects, no items, nothing at all.
If you have a plate with no chapatis, you have zero chapatis. Zero comes before 1 on the number line.
0 — 1 — 2 — 3 — 4 — 5 — 6 — 7 — 8 — 9
What is The Number Zero - Class 1 Maths (Numbers 1 to 9)?
Zero (0) means none or nothing. It is the number we use when there is not a single object in a group.
Zero is the smallest whole number. It is not a counting number (we don't start counting at zero), but it is still very important.
Solved Examples
Example 1: Empty Plate
Question: Ria ate all the biscuits on her plate. How many biscuits are left?
Think:
- All biscuits are eaten
- Nothing is left on the plate
- The number for nothing is 0
Answer: There are 0 biscuits left.
Example 2: No Birds on the Tree
Question: Aman sees a tree. All the birds flew away. How many birds are on the tree?
Think:
- All birds flew away
- No birds are left
Answer: There are 0 birds on the tree.
Example 3: Zero on the Number Line
Question: Where is 0 on the number line?
Think:
- Look at the number line
- 0 is at the very start, before 1
0 — 1 — 2 — 3 — 4 — 5
Answer: Zero is at the beginning of the number line, before 1.
Example 4: Adding Zero
Question: Kavi has 5 toffees. He gets 0 more. How many does he have now?
Think:
- He started with 5
- He got 0 more (nothing added)
- 5 + 0 = 5
Answer: Kavi still has 5 toffees.
Example 5: Taking Away to Get Zero
Question: Priya has 3 balloons. All 3 burst. How many are left?
Think:
- She had 3 balloons
- 3 burst → take away 3
- 3 − 3 = 0
Answer: 0 balloons are left.
Example 6: Comparing with Zero
Question: Which is less: 0 or 4?
Think:
- 0 means nothing, 4 means four things
- Nothing is always less than something
Answer: 0 < 4. Zero is less than 4.
Example 7: Empty Tiffin Box
Question: Dev opens his tiffin box at lunch. It is empty. How many food items are inside?
Think:
- The box is empty — nothing inside
Answer: There are 0 food items inside.
Key Points to Remember
- Zero (0) means nothing or none.
- Zero comes before 1 on the number line.
- Zero is the smallest whole number.
- Any number + 0 = the same number (adding nothing changes nothing).
- Any number − itself = 0 (if you take away everything, nothing is left).
- Zero is less than every counting number: 0 < 1, 0 < 2, 0 < 3, ...
Practice Problems
- Neha has 7 sweets. She eats all 7. How many sweets are left?
- What comes before 1 on the number line?
- Draw 0 circles. (Trick question — you draw nothing!)
- Aman has 4 marbles. He gets 0 more. How many does he have?
- Put the sign: 0 ___ 5 (use >, <, or =).
- Is zero more than 3 or less than 3?
Frequently Asked Questions
Q1. What is zero?
Zero (0) is the number that means nothing or none. If there are no objects in a group, the count is zero.
Q2. Is zero a number?
Yes, zero is a number. It is the smallest whole number. It has its own place on the number line, right at the start.
Q3. Where does zero come on the number line?
Zero comes at the very beginning, before 1. The number line starts: 0, 1, 2, 3, ...
Q4. What happens when you add zero to a number?
The number stays the same. Adding zero means adding nothing. For example, 6 + 0 = 6.
Q5. What happens when you subtract a number from itself?
You get zero. Taking away everything leaves nothing. For example, 5 − 5 = 0.
Q6. Is zero smaller than 1?
Yes. Zero is less than 1, and less than every counting number.
Q7. Can you count zero objects?
You cannot count zero objects because there is nothing to count. Zero means the group is empty.
