Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown. A ⭐ Bonus Challenge at the end is extra credit — skip it if the rest was hard work.
Level 1 · Warm-up
1 Work it out: 3 + 4 × 2
Show worked solution
4 × 2 = 8 first, then 3 + 8 = 11. (Not 14.)
2 Work it out: 20 − 6 ÷ 2
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6 ÷ 2 = 3 first, then 20 − 3 = 17.
3 Work it out: (5 + 3) × 2
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The brackets give 8, then 8 × 2 = 16.
Level 2 · Core
4 Work it out: 4 × 5 − 3 × 2
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4 × 5 = 20 and 3 × 2 = 6, so 20 − 6 = 14.
5 Work it out: 36 ÷ (2 + 4)
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The brackets give 6, then 36 ÷ 6 = 6.
6 Sam works out 12 − 3 × 2 and gets 18. What is the correct answer?
Show worked solution
The multiplication comes first: 3 × 2 = 6, then 12 − 6 = 6. Sam subtracted before multiplying.
Level 3 · Challenge
7 Where do brackets go to make this true: 2 + 3 × 4 = 20? Write the whole sentence with brackets. (type like (1+2)x3)
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Adding first gives 5, and 5 × 4 = 20, so the brackets go around the addition: (2+3)×4.
8 Work it out: 5 + 2 × (8 − 3)
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Brackets: 8 − 3 = 5. Then 2 × 5 = 10, then 5 + 10 = 15.
9 Work it out: 100 − 4 × (6 + 9)
Show worked solution
Brackets: 6 + 9 = 15. Then 4 × 15 = 60, then 100 − 60 = 40.