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Today's Keystones

Five retrieval questions for today — one from each strand. Choose your tier, then have a go. New set at midnight UK time.

Bedrock Cornerstone Lintel Capstone
Cornerstone · Grades 3–5 Keystones #72 26 August 2026 (today)

Keystones — Cornerstone

Five GCSE retrieval questions · 26 August 2026

  1. 1. Number

    Calculate: 977 + 230

    Answer: 977 + 230 = 1207
  2. 2. Algebra

    Solve: 8x = 96

    Answer: x = 12
  3. 3. Geometry

    Calculate perimeter: two sides are 8cm and 11cm at right angles

    Answer: 32.6cm
  4. 4. Ratio

    Simplify the ratio 40:10

    Answer: 4:1
  5. 5. Statistics

    Calculate the range of: 35, 46, 71, 39, 62, 79

    Answer: 44