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Cornerstone · Grades 3–5 Keystones #1 22 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 63

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics Mean

    Find the mean of: 19, 7, 19, 8

    Answer: 13.25

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