# How do you evaluate 15- 33+ 29?

Apr 8, 2017

$15 - 33 + 29 = 11$

#### Explanation:

Do the addition ($15 + 29$) first,

$15 + 29 = 44$

Now take the sum you just calculated $\left(44\right)$ and subtract $33$

$44 - 33 = 11$

Therefore,

$15 - 33 + 29 = 11$

Apr 8, 2017

11

#### Explanation:

You can perform the operations in any order, because they are all either addition or subtraction. Use of a number line may help for the 'negative' numbers or subtraction if you're now sure how they combine with multiple additions.
15 - 33 = -18 ; -18 + 29 = 11
Or,
15 + 29 = 44 ; 44 - 33 = 11
Or,
-33 + 29 = -4 ; 15 - 4 = 11

Apr 8, 2017

Just another way of thinking about it

11

#### Explanation:

We have negative 33

but positive 33 can be split into 15+18

so $- 33$ is the same as $- 15 - 18$

So write$\text{ } \textcolor{g r e e n}{15 \textcolor{red}{- 33} + 29}$ as $\textcolor{g r e e n}{15 \textcolor{red}{- 15 - 18} + 29}$

$0 - 18 + 29$

$29 - 18 = + 11$