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

Five GCSE retrieval questions · 5 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄8

    Answer: 21⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 38

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

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 6, 28, 19, 31, 17, 40, 23, 40

    Answer: 25.5

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