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Cornerstone · Grades 3–5 Keystones #1 16 April 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄7

    Answer: 16⁄21
  2. 2. Algebra Two-step equations

    Solve: 8x - 6 = 50

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 14cm

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics Mean

    Find the mean of: 15, 2, 2, 10

    Answer: 7.25

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