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Cornerstone · Grades 3–5 Keystones #1 6 January 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 57

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 2:3:3

    Answer: 24, 36 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 25, 9, 33, 41, 15, 19, 41. Give your answer to 2 decimal places

    Answer: 26.14