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A.1.3. Which operation comes first?

Step 1: Work within the ( )

Step 2: Work the ÷ and ×, from left to right

Step 3: Work the + and -, from left to right

Example: Evaluate 45 ÷ (18 - 9) + 5 × 6 - 4
45 ÷ (18 - 9) + 5 × 6 – 4	Step 1: Work within the ( )
= 45 ÷ 9 + 5 × 6 – 4	Step 2: Work the ÷ and × from left to right
= 5 + 5 × 6 – 4	Step 2: Work the ÷ and × from left to right
= 5 + 30 – 4	Step 3: Work the + and - from left to right
= 35 – 4	Step 3: Work the + and - from left to right
= 31