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

Five GCSE retrieval questions · 3 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x + 8 = 17

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

    Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 1:4

    Answer: 17 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 12, 26, 29, 30, 30, 44, 49. Give your answer to 2 decimal places

    Answer: 31.43

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