Step by step
The question
Question: what comes after 99?
What comes after 99?
We write it in numbers.
The box is the number we want.
= 99, □
1 Find 99
Here is a number line.
2 Go one step right
We land on 100.
3 Write the number
So after 99 comes 100.
= 99, 100
Careful!
After 9 ones, the ones start again at 0.
The tens go up by 1.
Careful: 99 → 100: the ones start again at 0
4 Check
We check it the other way.
Before 100 comes 99.
Yes!
It works.
Before 100 comes 99
Let's look back.
First: find 99.
Then: go one step right.
Then: write the number.
Last: check.
Answer
= 99, 100