Method course
Mental maths methods
Eight short lessons. Each one saves seconds on every screen.
1. Split, multiply, addSplit one number into easy parts, multiply each part, then add.Free
2. Fives, twenty-fives and one-two-fivesTurn ×5, ×25 and ×125 into ÷2, ÷4 and ÷8 with zeros, and run them backwards to divide.
3. Squares near a round numberSquare a number by moving it to a round number and back: a² = (a − b)(a + b) + b².
4. Fractions you should know by heartKnow eighths, sixths and sixteenths as decimals, and take a fraction of a number by dividing first.
5. Percentages in one stepBuild any percentage from 10%, 5% and 1%, use a multiplier for a rise or fall, and swap x% of y for y% of x.
6. Dividing cleanlyDivide by splitting the number into easy multiples, and clear decimals by scaling both numbers.
7. Reading a sequenceTry differences, then ratios, then two sequences taking turns, then rules built from earlier terms.
8. Probability and expected value at speedCount dice outcomes on a grid, use complements, and add expected values instead of listing outcomes.
Trading Interview Prep
£99 once. No VAT is charged.
Introductory price £99 until 31 December, then £149.
Practice for the online screens and the probability rounds, for 12 months.
- Unlimited drills for every skill, fresh each time
- 10 full timed screens: arithmetic, sequences and probability
- 120 probability, expected value, betting and market-making questions, each worked through
- A mental maths method course in 8 lessons
- Mia, your tutor, on every question
Access for 12 months, until 13 November 2027.