A number decreased by 4

Step by step

The question

Question: write with math signs: a number decreased by 4.

1 Change words to math

2 Put it in order

So we get n − 4.

3 Check

Let's check with a number.

Say the number is 10.

10 decreased by 4 is 6.

And 10 − 4 is 6 too.

So n − 4 is right!

Let's look back.

First: change words to math.

Then: put it in order.

Last: check.