Order of operations and formulae

Worksheet: Order of operations and formulae

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Answer the questions.

1. What is (6 + 4) × 3?
   a) 12b) 18c) 22d) 30
2. What is 20 − (8 + 2)?
   a) 10b) 14c) 30d) 6
3. In 5 × (3 + 2), you work out the brackets first, so the answer is 25.
   a) Trueb) False
4. What is 4 + 3 × 5?
   a) 19b) 23c) 27d) 35
5. What is 18 − 12 ÷ 3?
   a) 14b) 15c) 2d) 6
6. 2 + 6 × 4 has the same value as (2 + 6) × 4.
   a) Trueb) False
7. What is (15 − 3) ÷ 4 + 2?
   a) 11b) 3c) 5d) 8
8. A formula is area = length × width. What is the area when length is 7 and width is 4?
   a) 11b) 14c) 22d) 28
9. If n = 5, what is the value of 3n + 2?
   a) 10b) 17c) 32d) 35
10. If a = 6 and b = 3, what is the value of a − b + 10?
11. In the expression 4x, what does the letter x stand for?
    a) A bracketb) A numberc) A shaped) A unit only
12. What is 2 × (9 − 4) + 3 × 4?
13. Which number makes this true: 7 + ? = 15?
    a) 22b) 7c) 8d) 9
14. Find the missing number: 4 × ? − 3 = 17
15. If y + 9 = 20, then y = 11.
    a) Trueb) False
16. The perimeter of a square is P = 4 × s. What is s when P = 36?
    a) 144b) 32c) 8d) 9