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Cornerstone Jan 1 - 7 25 questions
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Monday 9 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 27 + 65

    Answer: 27 + 65 = 92
  2. 2. Algebra

    Factorise: 10x + 6

    Answer: 2(5x + 3)
  3. 3. Geometry

    Opposite = 10cm, adjacent = 12cm. Calculate the angle

    Answer: 39.8°
  4. 4. Ratio

    Calculate 50% of 140

    Answer: 70
  5. 5. Statistics

    Find the range of: 35, 16, 18, 26, 35

    Answer: 19

Tuesday 10 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 62 + 34

    Answer: 62 + 34 = 96
  2. 2. Algebra

    Factorise: 28x + 12

    Answer: 4(7x + 3)
  3. 3. Geometry

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

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

    Simplify the ratio 4:8

    Answer: 1:2
  5. 5. Statistics

    What is the probability of rolling a 4 on a fair die?

    Answer: 16

Wednesday 11 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 283, 265, and 109

    Answer: 657
  2. 2. Algebra

    Collect like terms: 7x + 3y + 3x + 6y

    Answer: 10x + 9y
  3. 3. Geometry

    Opposite = 18cm, adjacent = 20cm. Calculate the angle

    Answer: 42°
  4. 4. Ratio

    Calculate 50% of 114

    Answer: 57
  5. 5. Statistics

    A bag has 6 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 613

Thursday 12 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 45 + 84

    Answer: 45 + 84 = 129
  2. 2. Algebra

    Collect like terms: 3x + 2y + 4x + 8y

    Answer: 7x + 10y
  3. 3. Geometry

    Find the perimeter of a right triangle with sides 3cm and 4cm

    Answer: 12cm
  4. 4. Ratio

    Calculate 50% of 115

    Answer: 57.5
  5. 5. Statistics

    Calculate the mean of: 27, 40, 9, 29, 34, 6, 44

    Answer: 27

Friday 13 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 607 + 732

    Answer: 607 + 732 = 1339
  2. 2. Algebra

    Factorise: 40x + 25

    Answer: 5(8x + 5)
  3. 3. Geometry

    Calculate the distance between (2, 10) and (5, 14)

    Answer: 5
  4. 4. Ratio

    Simplify the ratio 24:12

    Answer: 2:1
  5. 5. Statistics

    Find the range of: 18, 40, 40, 24, 44

    Answer: 26