# Order of Operations - Parenthesis, Addition & Subtraction

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Objective: I know how to perform mixed operations with parenthesis, addition and subtraction.

If the calculations involve a combination of parenthesis, addition and subtraction then

Step 1: First, perform the operations within the parenthesis

Step 2: Next, perform addition and subtraction from left to right.

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Evaluate the following:

a) 9 – 4 + 3 =

b) 9 – (4 + 3) =

c) 3 + 2 – 3 + 1 =

d) (3 + 2) – (3 + 1) =

e) 7 – (2 + 3) + 1 =

f) 3 + 4 – (5 + 1) =

g) 23 – (12 – 8) + 15 =

h) 35 + 17 – (25 – 16) =

i) (43 + 12) – (36 – 11) =

j) 52 – (12 + 15) – 17 =

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