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Cornerstone Jan 1 - 7 25 questions
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Monday 5 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 79 + 89

    Answer: 79 + 89 = 168
  2. 2. Algebra

    Collect like terms: 3x + 5y + 5x + 2y

    Answer: 8x + 7y
  3. 3. Geometry

    Opposite = 11cm, adjacent = 9cm. Calculate the angle

    Answer: 50.7°
  4. 4. Ratio

    Simplify the ratio 28:8

    Answer: 7:2
  5. 5. Statistics

    Calculate the range of: 75, 39, 34, 47, 61, 35

    Answer: 41

Tuesday 6 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 44 + ? = 145

    Answer: 101
  2. 2. Algebra

    What is the next term? 5, 15, 45, 135, ...

    Answer: 405
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 28cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify the ratio 12:4

    Answer: 3:1
  5. 5. Statistics

    A bag has 8 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 8⁄11

Wednesday 7 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 28 + 98

    Answer: 28 + 98 = 126
  2. 2. Algebra

    Simplify: 2x + 3x

    Answer: 5x
  3. 3. Geometry

    Calculate the perimeter of a right triangle with sides 6cm and 5cm

    Answer: 18.8cm
  4. 4. Ratio

    Simplify the ratio 25:35

    Answer: 5:7
  5. 5. Statistics

    Find the range of: 11, 23, 12, 27, 11

    Answer: 16

Thursday 8 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 47 + 44

    Answer: 47 + 44 = 91
  2. 2. Algebra

    Solve: x + 6 = 19

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 50.2°
  4. 4. Ratio

    Calculate 50% of 104

    Answer: 52
  5. 5. Statistics

    What is the probability of getting heads when flipping a fair coin?

    Answer: 1⁄2

Friday 9 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 33 + ? = 113

    Answer: 80
  2. 2. Algebra

    For y = x³ + 4, calculate y when x = 3

    Answer: y = 31
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 16.2cm. Find the angle

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

    Simplify the ratio 28:12

    Answer: 7:3
  5. 5. Statistics

    Calculate the mean of: 17, 47, 7, 47, 34, 39, 48

    Answer: 34.1