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Cornerstone · Grades 3–5 Keystones #1 28 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 3⁄7

    Answer: 19⁄28
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 25

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 6cm

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 308 in the ratio 4:4:3

    Answer: 112, 112 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 12, 43, 35, 41, 9, 45, 29, 26

    Answer: 30

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