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Cornerstone · Grades 3–5 Keystones #1 11 July 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 1⁄4

    Answer: 19⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x - 5 = 25

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Find the mean of: 6, 5, 15, 13

    Answer: 9.75

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