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Cornerstone · Grades 3–5 Keystones #1 8 July 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 8 July 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 93

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 3:4:1

    Answer: 66, 88 and 22
  5. 5. Statistics Mean

    Find the mean of: 3, 4, 20

    Answer: 9

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