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ORDER OF OPERATIONS

ORDER OF OPERATIONS. LESSON 2. Something to Think About: Does the order matter?. -5 + 4 = 10 – 3 + 1 = 4 x 6 ÷ 2 = 9 ÷ 3 x 6 = . 4 + (-5) = 1 – 3 + 10 = 4 ÷ 2 x 6 = 6 ÷ 3 x 9 = . How about now?. 5 x 2 – 4 = What would happen if we did the subtractions first/ 2 – 4 x 5 =

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ORDER OF OPERATIONS

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  1. ORDER OF OPERATIONS LESSON 2

  2. Something to Think About: Does the order matter? • -5 + 4 = • 10 – 3 + 1 = • 4 x 6 ÷ 2 = • 9 ÷ 3 x 6 = • 4 + (-5) = • 1 – 3 + 10 = • 4 ÷ 2 x 6 = • 6 ÷ 3 x 9 =

  3. How about now? • 5 x 2 – 4 = • What would happen if we did the subtractions first/ • 2 – 4 x 5 = • So how do we know what to do first?

  4. RULES TO FOLLOW • Rule 1: • Simplify all operations inside brackets. • Rule 2: • Simplify all exponents, working from left to right. • Rule 3: • Perform all multiplications and divisions, working from left to right. • Rule 4: • Perform all additions and subtractions, working from left to right.

  5. BEDMAS • B – Brackets • E – Exponents • D – Division from left to right • M – Multiply from left to right • A – Add from left to right • S – Subtract from left to right

  6. EXAMPLE 1 • Evaluate this arithmetic expression • 18 + 36 ÷ 32 • SOLUTION:

  7. EXAMPLE 1 • Evaluate this arithmetic expression • 18 + 36 ÷ 32 • SOLUTION:

  8. EXAMPLE 1 • Evaluate this arithmetic expression • 18 + 36 ÷ 32 • SOLUTION:

  9. EXAMPLE 2 • Evaluate 52 x 24 • Solution:

  10. EXAMPLE 2 • Evaluate 52 x 24 • Solution:

  11. EXAMPLE 2 • Evaluate 52 x 24 • Solution:

  12. EXAMPLE 2 • Evaluate 52 x 24 • Solution:

  13. EXAMPLE 3 • EVALUATE 289 – (3 X 5)2

  14. EXAMPLE 3 • EVALUATE 289 – (3 X 5)2 • SOLUTION:

  15. EXAMPLE 3 • EVALUATE 289 – (3 X 5)2 • SOLUTION:

  16. EXAMPLE 3 • EVALUATE 289 – (3 X 5)2 • SOLUTION:

  17. EXAMPLE 3 • EVALUATE 289 – (3 X 5)2 • SOLUTION:

  18. EXAMPLE 4 • EVALUATE 8 + (2 x 5) x 34÷ 9

  19. EXAMPLE 4 • EVALUATE 8 + (2 x 5) x 34÷ 9 • SOLUTION:

  20. EXAMPLE 4 • EVALUATE 8 + (2 x 5) x 34÷ 9 • SOLUTION:

  21. EXAMPLE 4 • EVALUATE 8 + (2 x 5) x 34÷ 9 • SOLUTION:

  22. EXAMPLE 4 • EVALUATE 8 + (2 x 5) x 34÷ 9 • SOLUTION:

  23. EXAMPLE 4 • EVALUATE 8 + (2 x 5) x 34÷ 9 • SOLUTION:

  24. EXAMPLE 4 • EVALUATE 8 + (2 x 5) x 34÷ 9 • SOLUTION:

  25. Example 5 • When you have a division questions like this, it is the same as having brackets around everything on the top and bottom.

  26. YOU TRY THESE • 1) 32 x 43 • 2) 27 – 256 ÷ 43 • 3) 9 x (5 + 3)2 – 144 • 4) 7 + 3 x 24 ÷ 6

  27. 1) 32 x 43 • Solution:

  28. 2) 27 – 256 ÷ 43 • Solution:

  29. 3) 9 x (5 + 3)2 – 144 • Solution:

  30. 4) 7 + 3 x 24 ÷ 6 • Solution:

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