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Cornerstone · Grades 3–5 Keystones #1 20 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 6⁄7

    Answer: 51⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 52

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 42, 34, 5, 37, 25, 7, 19

    Answer: 24.1

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