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Cornerstone · Grades 3–5 Keystones #1 20 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 7⁄8

    Answer: 37⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 35

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

    Calculate the hypotenuse when a = 3cm and b = 13cm

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 2:1

    Answer: 56 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 34, 37, 12, 22, 43, 37, 28, 26

    Answer: 29.9

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