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Cornerstone · Grades 3–5 Keystones #1 15 March 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 4⁄6

    Answer: 13⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 35

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 1:4

    Answer: 10 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 47, 49, 41, 26, 42, 43, 23, 46. Give your answer to 2 decimal places

    Answer: 39.63

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