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

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

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x - 15 = 29

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 4:1

    Answer: 24 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 41, 49, 7, 29, 10, 15

    Answer: 25.2

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