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Cornerstone Jan 1 - 7 25 questions
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Monday 11 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9.3 + 8

    Answer: 9.3 + 8 = 17.3
  2. 2. Algebra

    Simplify: 5x + 6x

    Answer: 11x
  3. 3. Geometry

    Opposite = 11cm, hypotenuse = 12.7cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Calculate 25% of 80

    Answer: 20
  5. 5. Statistics

    Find the mean of: 13, 6, 19, 10, 17

    Answer: 13

Tuesday 12 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 482 + 825

    Answer: 482 + 825 = 1307
  2. 2. Algebra

    For y = x³, find y when x = 3

    Answer: y = 27
  3. 3. Geometry

    Opposite = 16cm, adjacent = 14cm. Calculate the angle

    Answer: 48.8°
  4. 4. Ratio

    Simplify the ratio 12:4

    Answer: 3:1
  5. 5. Statistics

    Find the mean of: 14, 7, 11

    Answer: 10.666666666667

Wednesday 13 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    900000

    Answer: 9 × 105
  2. 2. Algebra

    Solve: 9x = 90

    Answer: x = 10
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 9.2cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Simplify the ratio 15:10

    Answer: 3:2
  5. 5. Statistics

    Calculate the mean of: 19, 35, 38, 16, 48, 10

    Answer: 27.7

Thursday 14 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: -9 + 0

    Answer: -9
  2. 2. Algebra

    Solve: 9x = 117

    Answer: x = 13
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 11.3cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Find 56% of 187

    Answer: 104.72
  5. 5. Statistics

    Find the range of: 20, 16, 29, 6, 8

    Answer: 23

Friday 15 October 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 262, 240, and 93

    Answer: 595
  2. 2. Algebra

    Factorise: 18x + 48

    Answer: 6(3x + 8)
  3. 3. Geometry

    Opposite = 13cm, adjacent = 15cm. Calculate the angle

    Answer: 40.9°
  4. 4. Ratio

    Simplify: 6:8:4

    Answer: 3:4:2
  5. 5. Statistics

    Calculate the mean of: 43, 37, 24, 5, 11, 45, 47

    Answer: 30.3