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

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

  1. 1. Number Adding fractions

    Add: 1⁄3 + 5⁄6

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

    Solve: 5x + 4 = 34

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 8, 30, 21, 17, 44, 22. Give your answer to 2 decimal places

    Answer: 23.67

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