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Definition of Zero
Overview
There’s a very special number in math, and its name is zero!
Zero is a number with no value. It means none or nothing or empty.
It looks like this:
It’s a circle with nothing in the middle. It’s a donut with an empty hole.
Imagine you have a box of 6 donuts, and you give all 6 donuts away to your friends.
How many donuts are left?
Zero!
Zero is an important number in math because we need a number to represent none.
Let’s look at this math problem:
10 – 10 = ____
We need a zero to complete it, don’t we?
10 – 10 = 0
Most of the time, zero is at the beginning of a number line, no matter how far it goes….
When we’re learning to count, we may not say zero, but that’s where we began!
(0) 1, 2, 3, 4, 5…..
And when we need to start over, where do we usually start?
At zero!
Zero is also the way we spot our tens:
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
Zero is a very helpful number!
Let’s explore our hero, zero, with some practice questions!
Practice Question 1
If you have 1 donut and eat it, how many donuts do you have left?
Remember the shape of zero looks like a donut with an empty hole!
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Practice Question 2
Let’s start with a dozen donuts and give away all of them. How many are left?
12 – 12 = ____
Practice Question 3
Let’s try a math problem with very small numbers. What’s the answer?
1 – 1 = ____
Practice Question 4
Now, how about some really big numbers. What’s the answer?
100 – 100 = ____
Practice Question 5
What’s the answer?
10 – ____ = 0
Now that you know all about zero, you’ll spot it everywhere. You may also see it in really big numbers like a million because a million looks like this: 1,000,000!
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