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

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

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄5

    Answer: 49⁄40
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 74

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Find the mean of: 5, 12, 17, 12

    Answer: 11.5

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