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Cornerstone · Grades 3–5 Keystones #1 22 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 3⁄5

    Answer: 26⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 37

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 14cm

    Answer: 16.12cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 20, 36, 35, 20, 20, 11

    Answer: 23.7

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