Calculate 4 tens 9 ones

Step by step

The question

Question: what number is 4 tens and 9 ones?

1 Show it with blocks

A ten is 10 ones stuck together.

We count the tens, then the ones.

2 Write the number

In 49, the 4 is in the tens place.

The 9 is in the ones place.

So 4 tens and 9 ones is 49.

3 Check

4 tens is 40.

40 and 9 make 49.

Yes!

It works.

Let's look back.

First: show it with blocks.

Then: write the number.

Last: check.