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Cornerstone · Grades 3–5 Keystones #1 28 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 1⁄3

    Answer: 11⁄24
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 62

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 9cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 260 in the ratio 3:3:4

    Answer: 78, 78 and 104
  5. 5. Statistics Mean

    Find the mean of: 15, 3, 5, 7, 5

    Answer: 7

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