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Calculate: (5 + 3) × (2^2 - 1)

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Question: Calculate: (5 + 3) × (2^2 - 1)

Options:

  1. 32
  2. 24
  3. 16
  4. 20

Correct Answer: 24

Solution:

First, calculate inside the parentheses: 2^2 - 1 = 3. Then, (5 + 3) = 8. Finally, 8 × 3 = 24.

Calculate: (5 + 3) × (2^2 - 1)

Practice Questions

Q1
Calculate: (5 + 3) × (2^2 - 1)
  1. 32
  2. 24
  3. 16
  4. 20

Questions & Step-by-Step Solutions

Calculate: (5 + 3) × (2^2 - 1)
  • Step 1: Calculate the expression inside the first parentheses: 5 + 3.
  • Step 2: Add 5 and 3 to get 8.
  • Step 3: Calculate the expression inside the second parentheses: 2^2 - 1.
  • Step 4: First, calculate 2^2, which is 4.
  • Step 5: Then, subtract 1 from 4 to get 3.
  • Step 6: Now, multiply the results from Step 2 and Step 5: 8 × 3.
  • Step 7: Finally, calculate 8 × 3 to get 24.
  • Order of Operations – Understanding the correct sequence to perform calculations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).
  • Basic Arithmetic – Performing addition, subtraction, multiplication, and exponentiation.
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