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Cornerstone Jan 1 - 7 25 questions
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Monday 30 September 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 32 + ? = 108

    Answer: 76
  2. 2. Algebra

    For y = x³, find y when x = 2

    Answer: y = 8
  3. 3. Geometry

    Opposite = 14cm, adjacent = 17cm. Calculate the angle

    Answer: 39.5°
  4. 4. Ratio

    Simplify the ratio 40:10

    Answer: 4:1
  5. 5. Statistics

    Find the mean of: 2, 13, 20, 17

    Answer: 13

Tuesday 1 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 97 + ? = 185

    Answer: 88
  2. 2. Algebra

    Solve: x + 15 = 22

    Answer: x = 7
  3. 3. Geometry

    Opposite = 18cm, adjacent = 9cm. Calculate the angle

    Answer: 63.4°
  4. 4. Ratio

    Calculate 10% of 25

    Answer: 2.5
  5. 5. Statistics

    A bag has 6 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 611

Wednesday 2 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 93 + 94

    Answer: 93 + 94 = 187
  2. 2. Algebra

    Solve: x + 2 = 8

    Answer: x = 6
  3. 3. Geometry

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

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

    Calculate 10% of 162

    Answer: 16.2
  5. 5. Statistics

    Calculate the mean of: 21, 26, 28, 15, 23, 32, 39, 50

    Answer: 29.3

Thursday 3 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 23 + 15

    Answer: 1315
  2. 2. Algebra

    Expand: 5(3x + 7)

    Answer: 15x + 35
  3. 3. Geometry

    Opposite = 14cm, adjacent = 20cm. Calculate the angle

    Answer: 35°
  4. 4. Ratio

    Simplify the ratio 12:6

    Answer: 2:1
  5. 5. Statistics

    Find the mean of: 5, 15, 19, 6, 7

    Answer: 10.4

Friday 4 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 122, 207, and 150

    Answer: 479
  2. 2. Algebra

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

    Answer: 6x + 12y
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 13cm and 11cm

    Answer: 71.5cm²
  4. 4. Ratio

    Find 52% of 162

    Answer: 84.24
  5. 5. Statistics

    Calculate the mean of: 37, 14, 39, 30, 29, 15, 13, 33

    Answer: 26.3