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Cornerstone · Grades 3–5 Keystones #1 5 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 1⁄4

    Answer: 19⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 57

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 130 in the ratio 3:3:4

    Answer: 39, 39 and 52
  5. 5. Statistics Mean

    Find the mean of: 14, 6, 16, 9, 3

    Answer: 9.6

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