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Cornerstone · Grades 3–5 Keystones #1 31 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 5⁄6

    Answer: 35⁄24
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 88

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

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

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 3:3:4

    Answer: 81, 81 and 108
  5. 5. Statistics Mean

    Calculate the mean of: 14, 29, 12, 43, 13, 6, 26. Give your answer to 2 decimal places

    Answer: 20.43

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