What is the outcome of 9 – 4 × 2 + 1 using BODMAS/BIDMAS rules?

Study for the HSC Mathematics Standard 2 Exam. Utilize flashcards and multiple choice questions, each with hints and explanations. Prepare confidently for your exam success!

To solve the expression 9 - 4 × 2 + 1 using the BODMAS/BIDMAS rules, you must prioritize operations in the following order: Brackets, Orders (exponents and roots), Division and Multiplication (from left to right), Addition and Subtraction (from left to right).

  1. First, identify and perform any multiplication in the expression. The multiplication here is 4 × 2:
  • 4 × 2 = 8.
  1. Substitute this back into the expression, which now reads:
  • 9 - 8 + 1.
  1. Next, you perform the addition and subtraction from left to right:
  • Start with the subtraction: 9 - 8 = 1.

  • Then, add 1 to that result: 1 + 1 = 2.

Therefore, the final outcome of the expression is 2. This confirms that the correct answer is indeed the first choice.

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