Order of Operations — Order of Operations worksheet for Grade 6.
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Multiplication and division are inverse operations with equal mathematical weight. They should be performed from left to right as they appear in the expression. The same applies to addition and subtraction. For example, in 12 ÷ 2 × 3, you work left to right: 12 ÷ 2 = 6, then 6 × 3 = 18. If you did multiplication first, you'd get a different (wrong) answer.
Work from the innermost parentheses outward. For example, in 5 × (10 − (3 + 2)), solve 3 + 2 first to get 5, then solve 10 − 5 to get 5, and finally 5 × 5 to get 25. This is called 'nested parentheses,' and it's important to remember that you always solve the deepest layer first.
If everyone used different orders, we'd get different answers for the same problem! The order of operations is a universal rule that ensures everyone solves expressions the same way. For instance, 2 + 3 × 4 equals 14 when you follow order of operations (multiply first), but 20 if you go left to right. We use the standard rule so math makes sense across all contexts.
Encourage them to write 'PEMDAS' or 'BODMAS' down on their paper and check off each letter as they verify that operation isn't needed. They can also use the mnemonic 'Please Excuse My Dear Aunt Sally' or create their own memory device. The key is practicing until the rule becomes automatic.
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The order of operations is a specific set of rules that tells us *how* to solve expressions correctly. Without it, people would solve the same problem in different ways and get different answers. Learning order of operations teaches students that math has a logical system and consistent rules, which is fundamental to all mathematics.