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

Five GCSE retrieval questions · 1 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄3

    Answer: 17⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x - 16 = 50

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 4:3:2

    Answer: 120, 90 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 10, 43, 47, 10, 31, 6, 21, 19. Give your answer to 2 decimal places

    Answer: 23.38

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