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Cornerstone · Grades 3–5 Keystones #1 15 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 4⁄6

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x - 17 = -5

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 4:3:1

    Answer: 96, 72 and 24
  5. 5. Statistics Mean

    Find the mean of: 22, 8, 2, 5, 3

    Answer: 8

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