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Cornerstone · Grades 3–5 Keystones #1 12 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

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

    Solve: 7x + 9 = 51

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:3

    Answer: 20 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 39, 17, 11, 49, 17, 16, 8

    Answer: 22.4

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