Step by step
The question
Question: is 36 odd or even?
Is 36 odd or even?
Even means it makes pairs, with none left over.
Odd means one is left over.
even: all in pairs
odd: 1 left over
1 Look at the ones
36 is 30 and 6.
36 = 30 + 6
Every ten makes 5 pairs.
So 30 is all pairs.
Only the 6 ones are left to check.
10 = 5 pairs
2 Put the ones in pairs
Here are 6 dots in pairs.
A pair is 2.
Ring each pair.
Every dot has a partner.
3 Odd or even
None left over.
So 36 is even.
= 36 is even
4 Check
We count by 2s from 30: 30, 32, 34, 36.
We land on 36.
Yes!
It works.
30, 32, 34, 36
Let's look back.
First: look at the ones.
Then: put the ones in pairs.
Then: odd or even.
Last: check.
Answer
= 36 is even