This worksheet is about word problems that require you to add and subtract, not just once, but perhaps several times.

**Why do we add numbers?**

We **add **when ...

- we increase amounts
- someone gives us something extra
- we get more of something.

**Why do we subtract numbers?**

We **subtract **when ...

- we decrease amounts
- we give away something
- we spend money.

**Example**

There are 225 sweets in a jar.

Jack takes 35 sweets out of the jar.

Jane takes 15 less than Jack out of the jar.

How many sweets are left in the jar?

**Answer**

First we work out how many sweets Jane takes.

This is 15 less than Jack.

35 -15 = 20.

So Jane takes 20 sweets.

Sweets left in jar = 225 - 35 - 20 = 190 - 20 = **170 **sweets