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Cornerstone · Grades 3–5 Keystones #1 29 December 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 29 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 6⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x + 15 = 48

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 6cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 2:3:4

    Answer: 28, 42 and 56
  5. 5. Statistics Mean

    Find the mean of: 18, 2, 6, 20, 5

    Answer: 10.2

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