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Cornerstone · Grades 3–5 Keystones #1 1 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 3⁄5

    Answer: 39⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 24

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 225 in the ratio 4:1:4

    Answer: 100, 25 and 100
  5. 5. Statistics Mean

    Find the mean of: 6, 20, 3, 15

    Answer: 11

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