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Cornerstone · Grades 3–5 Keystones #1 29 April 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 29 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄8

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 64

    Answer: x = 8
  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 84 in the ratio 4:3

    Answer: 48 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 16, 50, 9, 26, 16, 48, 9, 43

    Answer: 27.1

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