Step by step
The question
Question: what goes with 9 to make 10?
What goes with 9 to make 10?
In numbers: 9 plus what number is 10?
The box is the number we want.
9 + □ = 10
1 Show 9
A ten frame has 10 boxes.
2 Fill the empty boxes
How many boxes are empty?
We fill them with blue dots.
We count them.
3 Write the number
1 blue dots fill the frame.
So 9 and 1 make 10.
9 + 1 = 10
4 Check
We count all the dots.
We start at 9 and count on.
10.
Yes!
It works.
9, 10
Let's look back.
First: show 9.
Then: fill the empty boxes.
Then: write the number.
Last: check.
Answer
9 + 1 = 10