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Cornerstone · Grades 3–5 Keystones #1 28 March 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 28 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 6⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 40

    Answer: x = 4
  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

    Divide 253 in the ratio 3:4:4

    Answer: 69, 92 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 15, 25, 33, 10, 46, 31

    Answer: 26.7

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