Practise mental addition, subtraction, multiplication and division.
Finish a session to see your progress curve.
Finish each challenge to mark it as explored.
Year 1 — Sums ≤ 15
10 simple additions
Year 2 — Tables ×2, ×3, ×4, ×5
10 multiplications
Year 3 — Complements to 100
10 complements to a hundred
Year 4 — ×/÷ by 10 and 100
10 powers-of-10 calculations
Year 4 — Decimals × 10
10 products with a decimal
Year 5 — Divisibility
10 yes/no on 2, 3, 5, 9, 10
Year 5 — Order of magnitude
10 quick estimates
Free practice
All operations mixed at the chosen level.
