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Cornerstone · Grades 3–5 Keystones #1 25 August 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 3⁄5

    Answer: 14⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x + 9 = 34

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 10cm

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 2:1

    Answer: 72 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 25, 47, 34, 6, 21, 39

    Answer: 28.7

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