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Cornerstone · Grades 3–5 Keystones #1 21 October 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 2⁄5

    Answer: 13⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 57

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Divide 308 in the ratio 3:4:4

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

    Find the mean of: 3, 5, 9

    Answer: 5.6666666666667

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