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Cornerstone · Grades 3–5 Keystones #1 21 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 2⁄12

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x - 19 = -3

    Answer: x = 8
  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 72 in the ratio 1:2

    Answer: 24 and 48
  5. 5. Statistics Mean

    Find the mean of: 6, 7, 9, 16, 18

    Answer: 11.2

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