Step by step
The question
Question: count by 2s from 40 to 56.
Count by 2s from 40 to 56
1 Start at 40
Here is a number line.
2 Jump by 2s
Each jump is 2 more.
We say the number where we land.
3 Write the numbers
Now we write them in a row.
We stop at 56.
= 40, 42, 44, 46, 48, 50, 52, 54, 56
4 Check
Look at the ones digits: 0, 2, 4, 6, 8, then again.
They make a pattern.
Yes!
It works.
ones: 0, 2, 4, 6, 8, 0, 2, 4, 6
Let's look back.
First: start at 40.
Then: jump by 2s.
Then: write the numbers.
Last: check.
Answer
= 40, 42, 44, 46, 48, 50, 52, 54, 56