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

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

  1. 1. Number Adding fractions

    Add: 6⁄7 + 3⁄4

    Answer: 45⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x + 6 = 62

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 3:2

    Answer: 33 and 22
  5. 5. Statistics Mean

    Find the mean of: 12, 7, 7

    Answer: 8.6666666666667

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