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Cornerstone · Grades 3–5 Keystones #1 11 April 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 5⁄8

    Answer: 49⁄40
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 61

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 3:4:2

    Answer: 90, 120 and 60
  5. 5. Statistics Mean

    Find the mean of: 9, 9, 19, 7

    Answer: 11

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