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Cornerstone Jan 1 - 7 25 questions
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Monday 24 October 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 124, 232, and 59

    Answer: 415
  2. 2. Algebra

    Expand: 7(x + 8)

    Answer: 7x + 56
  3. 3. Geometry

    Calculate the distance between (3, 4) and (6, 8)

    Answer: 5
  4. 4. Ratio

    Find 35% of 72

    Answer: 25.2
  5. 5. Statistics

    What is the probability of rolling a 3 on a fair die?

    Answer: 16

Tuesday 25 October 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 33 × 34

    Answer: 37
  2. 2. Algebra

    Solve: 4x = 60

    Answer: x = 15
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Simplify: 16:12:16

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

    Calculate the mean of: 8, 32, 21, 32, 50, 11, 43

    Answer: 28.1

Wednesday 26 October 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 737 + 231

    Answer: 737 + 231 = 968
  2. 2. Algebra

    Collect like terms: 4x + 3y + 5x + 8y

    Answer: 9x + 11y
  3. 3. Geometry

    Opposite = 12cm, adjacent = 8cm. Calculate the angle

    Answer: 56.3°
  4. 4. Ratio

    Simplify: 10:12:4

    Answer: 5:6:2
  5. 5. Statistics

    Calculate the mean of: 46, 50, 42, 27, 21, 50, 10, 24

    Answer: 33.8

Thursday 27 October 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 73 × 75

    Answer: 78
  2. 2. Algebra

    Solve: x + 4 = 23

    Answer: x = 19
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 16cm. Find the angle

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

    Simplify: 4:4:6

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

    Find the mean of: 7, 13, 9, 19, 9

    Answer: 11.4

Friday 28 October 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3 + 3

    Answer: 6
  2. 2. Algebra

    Simplify: 5x + 8x

    Answer: 13x
  3. 3. Geometry

    Opposite = 13cm, hypotenuse = 15cm. Find the angle

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

    Find 29% of 84

    Answer: 24.36
  5. 5. Statistics

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

    Answer: 12