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Cornerstone · Grades 3–5 Keystones #1 5 March 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 March 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 6 = 50

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 4:3:1

    Answer: 56, 42 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 50, 50, 37, 9, 42, 49

    Answer: 39.5

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