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Cornerstone · Grades 3–5 Keystones #1 20 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 1⁄8

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 2x - 12 = -4

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 6, 46, 31, 22, 50, 49, 47

    Answer: 35.9

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