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Cornerstone · Grades 3–5 Keystones #1 25 March 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x - 12 = 0

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 187 in the ratio 3:4:4

    Answer: 51, 68 and 68
  5. 5. Statistics Mean

    Find the mean of: 19, 12, 14

    Answer: 15

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