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Cornerstone · Grades 3–5 Keystones #1 2 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 2⁄12

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

    Solve: 3x + 11 = 32

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics Mean

    Calculate the mean of: 28, 30, 28, 7, 50, 47, 34, 29

    Answer: 31.6

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