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Cornerstone · Grades 3–5 Keystones #1 26 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 3⁄8

    Answer: 47⁄40
  2. 2. Algebra Two-step equations

    Solve: 6x - 15 = 9

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 10cm

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

    Divide 208 in the ratio 1:2:1

    Answer: 52, 104 and 52
  5. 5. Statistics Mean

    Find the mean of: 19, 9, 3, 9

    Answer: 10

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