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Grade 3 - Mathematics
2.11 Order of Operations Involving +, -, and * (WIZ Math)

  • When performing arithmetic operations there can be only one correct answer.
  • In order to avoid this kind of confusion, Mathematicians have devised a standard order of operations for calculations involving more than one arithmetic operation.
Method:
  1. Perform any calculations inside parentheses.
  2. Perform all multiplications and divisions, working from left to right.
  3. Lastly, perform all additions and subtractions, working from left to right.
Example:
Evaluate the following arithmetic expression: 4 + 5 x 3
Solution:
Solution 1 Solution 2
4 + 5 x 3
= 9 x 3
= 27
4 + 5 x 3
= 4 + 15
= 19
Incorrect Correct
Answer: 19


Directions: Evaluate the following arithmetic expressions. Also write at least ten examples of your own using operations: addition, subtraction, multiplication and division.
Question 1: This question is available to subscribers only!

Question 2: This question is available to subscribers only!


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