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Cornerstone · Grades 3–5 Keystones #1 3 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 7⁄8

    Answer: 13⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x - 18 = 21

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 3:1

    Answer: 54 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 24, 29, 35, 25, 23, 35

    Answer: 28.5

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