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.
Level 1 · Warm-up
1 Work out 4 + 2 × 5.
Show worked solution
2 × 5 = 10 first, then 4 + 10 = 14.
2 Work out 20 − 12 ÷ 4.
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12 ÷ 4 = 3 first, then 20 − 3 = 17.
3 Work out (6 + 3) × 2.
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6 + 3 = 9 first, then 9 × 2 = 18.
Level 2 · Core
4 Work out 3 × (−4) + 10.
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3 × (−4) = −12, then −12 + 10 = −2.
5 Work out 18 ÷ (−3) − 4.
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18 ÷ (−3) = −6, then −6 − 4 = −10.
6 Work out (−5 + 9) × (−3).
Show worked solution
−5 + 9 = 4, then 4 × (−3) = −12.
Level 3 · Challenge
7 Work out 24 ÷ (−4) + 3 × (−2).
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24 ÷ (−4) = −6 and 3 × (−2) = −6, then −6 + (−6) = −12.
8 Work out 2 × (5 − 8)2.
Show worked solution
5 − 8 = −3, then (−3)2 = 9, then 2 × 9 = 18.
9 Work out (−6) × (−2) − 15 ÷ 3.
Show worked solution
(−6) × (−2) = 12 and 15 ÷ 3 = 5, then 12 − 5 = 7.