Step by step
The question
Question: compare 29 and 31.
Which is more?
Compare 29 and 31
1 Show the tens and ones
29 is 2 tens and 9 ones.
31 is 3 tens and 1 one.
2 Compare the tens
Look at the tens first.
2 tens is less than 3 tens.
So 31 is more.
2 tens < 3 tens
3 Write it with a sign
29 is less than 31.
We write 29 < 31.
29 < 31
The sign < means less than.
The sign > means greater than.
Greater means more.
The open side faces the bigger number.
< less than
> greater than
Careful!
29 has more ones.
But the tens count more.
3 tens is more than 2 tens.
Careful: not 29 > 31 ✗
4 Check
On the number line, bigger numbers are to the right.
Yes!
It works.
31 is right of 29
Let's look back.
First: show the tens and ones.
Then: compare the tens.
Then: write it with a sign.
Last: check.
Answer
Careful: not 29 > 31 ✗