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Cornerstone · Grades 3–5 Keystones #1 29 June 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 29 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 6⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x - 15 = -7

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 117 in the ratio 3:2:4

    Answer: 39, 26 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 33, 21, 22, 44, 5, 25, 27, 32

    Answer: 26.1

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