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Cornerstone · Grades 3–5 Keystones #1 26 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄5

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 100

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 76 in the ratio 1:3

    Answer: 19 and 57
  5. 5. Statistics Mean

    Find the mean of: 3, 13, 2, 5, 15

    Answer: 7.6

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