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Cornerstone · Grades 3–5 Keystones #1 20 August 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 3⁄6

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x - 13 = 17

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 14, 23, 14, 7, 2

    Answer: 12

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