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Today's Keystones

Five retrieval questions for today — one from each strand. The five skills stay the same for the week, with new numbers each day. Choose your tier, then have a go.

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Lintel · Grades 5–7 Keystones #256 13 September 2026 (today) Skills week 2 of 7

Keystones — Lintel

Five GCSE retrieval questions · 13 September 2026

  1. 1. Number Mixed index laws

    Simplify: y3 × (y4)2 ÷ y2

    Answer: y9
  2. 2. Algebra Unknowns on both sides

    Solve: 5x + 6 = 2x - 6

    Answer: x = 4
  3. 3. Geometry Distance between two points

    Calculate the distance between (6, 6) and (9, 10)

    Answer: 5
  4. 4. Ratio Repeated percentage change

    A value of 481 increases by 10% each year for 3 years. Final value?

    Answer: 640.21
  5. 5. Statistics Median

    Calculate the median of: 39, 26, 13, 36, 23, 28

    Answer: 27

Same five questions for everyone on Lintel today. Only today's set is shown here — a new set appears at midnight UK time.