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Lintel · Grades 5–7 Keystones #1 3 September 2021
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Keystones — Lintel

Five GCSE retrieval questions · 3 September 2021 · mathsvault.uk/keystones

  1. 1. Number

    Find the missing number: 5.13 + □ = 14.35

    Answer: □ = 9.22
  2. 2. Algebra

    Solve: x5 = 3.4

    Answer: x = 17
  3. 3. Geometry

    Adjacent = 27cm, hypotenuse = 34cm. Find the angle

    Answer: 37.4°
  4. 4. Ratio

    Calculate 17.8% of 332

    Answer: 59.1
  5. 5. Statistics

    A bag has 7 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 715