Calculate 1 + □ = 10

Step by step

The question

Question: 1 + □ = 10.

What number goes in the box?

1 Show 1

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

9 blue dots fill the frame.

So 1 and 9 make 10.

4 Check

We count all the dots.

We start at 1 and count on.

2, 3, 4, 5, 6, 7, 8, 9, 10.

Yes!

It works.

Let's look back.

First: show 1.

Then: fill the empty boxes.

Then: write the number.

Last: check.