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Learn: Mastering the Order of Operations (BIDMAS/BODMAS)
iGCSE Mathematics
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Welcome!Welcome back! You've already learned essential mathematical symbols and operations. Now, we'll build on that foundation to master BIDMAS, an important rule for solving mathematical problems correctly.
What is BIDMAS?BIDMAS stands for Brackets, Indices, Division, Multiplication, Addition, and Subtraction. It tells us the correct order to solve operations in a mathematical expression so that everyone gets the same answer.
Quick check: What does BIDMAS help us do?
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Breaking Down BIDMASBrackets: Always solve expressions inside brackets first.Indices: Calculate powers or roots (e.g., 23 or √16).Division and Multiplication: Work from left to right, whichever comes first.Addition and Subtraction: Perform these last, working from left to right.
According to BIDMAS, operations inside {{blank0}} are solved first.
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Why is BIDMAS Important?Without BIDMAS, solving expressions can lead to confusion. For example, 2 + 3 × 4 could be solved as (2 + 3) × 4 = 20 or 2 + (3 × 4) = 14. BIDMAS ensures everyone agrees on the correct answer.
Match the items on the left with their correct pairs on the right
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Match the items on the left with their correct pairs on the right
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Common MistakesStudents often skip brackets or solve addition before multiplication. Remember, follow BIDMAS step by step to avoid errors.
Which operation is performed first in the expression 3 + (5 × 2)?
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Review Time!Great work! You've learned how to use BIDMAS to solve expressions correctly. Now, let's review with a few practice questions.
Which of the following statements about BIDMAS are true? (Select all that apply)
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Match the items on the left with their correct pairs on the right
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In BIDMAS, {{blank0}} and {{blank1}} are performed last in the order.
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Great Job!You've mastered BIDMAS and the order of operations. Keep practising to stay confident in solving expressions correctly!
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