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Cornerstone · Grades 3–5 Keystones #1 6 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 4⁄6

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 6x + 10 = 34

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 252 in the ratio 3:2:4

    Answer: 84, 56 and 112
  5. 5. Statistics Mean

    Find the mean of: 9, 16, 10, 14

    Answer: 12.25

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