When we estimate, we guess but with some calculation.
In this worksheet, you must estimate which number the arrow is pointing to on a vertical number line.
Estimate which number the arrow is pointing to.
In your mind, picture where the halfway number 5 is.
In your mind, picture the small number divisions between 0, 5 and 10.
The arrow is pointing to one mark before 5, which is 4.
Is that the number you thought it would be?
Let's have a go at some questions now.