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Cornerstone · Grades 3–5 Keystones #1 26 June 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 26 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄5

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x - 18 = -4

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 2:1:2

    Answer: 48, 24 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 37, 37, 43, 8, 20, 13

    Answer: 26.3

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