Step by step
The question
Question: count by 2s from 11 to 25.
Count by 2s from 11 to 25
1 Start at 11
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 25.
= 11, 13, 15, 17, 19, 21, 23, 25
4 Check
Look at the ones digits: 1, 3, 5, 7, 9, then again.
They make a pattern.
Yes!
It works.
ones: 1, 3, 5, 7, 9, 1, 3, 5
Let's look back.
First: start at 11.
Then: jump by 2s.
Then: write the numbers.
Last: check.
Answer
= 11, 13, 15, 17, 19, 21, 23, 25