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Cornerstone · Grades 3–5 Keystones #1 27 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄5

    Answer: 17⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x - 15 = 25

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 102 in the ratio 1:2:3

    Answer: 17, 34 and 51
  5. 5. Statistics Mean

    Find the mean of: 19, 10, 16, 4, 3

    Answer: 10.4

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