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Cornerstone · Grades 3–5 Keystones #1 21 February 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 52

    Answer: x = 12
  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

    Divide 253 in the ratio 4:4:3

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

    Calculate the mean of: 46, 47, 45, 10, 22, 5. Give your answer to 2 decimal places

    Answer: 29.17

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