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Cornerstone · Grades 3–5 Keystones #1 19 February 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄6

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 52

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 2:1:4

    Answer: 40, 20 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 23, 16, 21, 14, 23, 47, 36. Give your answer to 2 decimal places

    Answer: 25.71

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