Work through these on your own. Keep your working neat: the method matters as much as the answer. Questions marked H are for Higher tier.

1.4 Priority of operations and inverse operations — Practise

Work through these on your own. Keep your working neat: the method matters as much as the answer. Questions marked H are for Higher tier.

1. Work out $6 + 4 \times 3$.
2. Work out $(6 + 4) \times 3$.
3. Work out $30 - 2 \times 7$.
4. Work out $4^2 - 5$.
5. Work out $15 \div 3 + 2 \times 4$.
6. Work out $20 - 12 \div 4$.
7. Work out $36 \div 6 \times 2$.
8. Work out $10 + \sqrt{25}$.
9. Work out $2 \times (9 - 4)^2$.
10. I think of a number, add 6, then multiply by 3. The result is 36. Find the number.
11. I think of a number, square it, then subtract 5. The result is 20. Find the possible values.
12. Write an expression for the profit at the stall and evaluate it.
13. H Insert brackets to make the statement true: $2 + 3 \times 4 - 1 = 19$.
14. H Work out $3 + 4 \times (7 - 2^2)$.