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Cornerstone · Grades 3–5 Keystones #1 14 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄8

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 34

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 1:2

    Answer: 9 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 45, 44, 12, 6, 47, 20, 6, 35

    Answer: 26.9

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