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Cornerstone Jan 1 - 7 25 questions
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Monday 21 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 42 + 98

    Answer: 42 + 98 = 140
  2. 2. Algebra

    Expand: 9(x + 2)

    Answer: 9x + 18
  3. 3. Geometry

    Opposite = 8cm, adjacent = 13cm. Calculate the angle

    Answer: 31.6°
  4. 4. Ratio

    Simplify the ratio 4:14

    Answer: 2:7
  5. 5. Statistics

    Find the mean of: 10, 19, 3

    Answer: 10.666666666667

Tuesday 22 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 41 + ? = 127

    Answer: 86
  2. 2. Algebra

    Simplify: 3x + 3x

    Answer: 6x
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 7.cm. Find the angle

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

    Simplify the ratio 12:9

    Answer: 4:3
  5. 5. Statistics

    Find the mean of: 7, 18, 15, 16, 18

    Answer: 14.8

Wednesday 23 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 36 + 48

    Answer: 36 + 48 = 84
  2. 2. Algebra

    Factorise: 8x² + 4x

    Answer: 4x(2x + 1)
  3. 3. Geometry

    Calculate the area of a circle with diameter 24cm

    Answer: 452.39cm²
  4. 4. Ratio

    Simplify the ratio 12:21

    Answer: 4:7
  5. 5. Statistics

    Calculate the mean of: 16, 6, 31, 41, 6, 12, 32, 38

    Answer: 22.8

Thursday 24 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 65 + 69

    Answer: 65 + 69 = 134
  2. 2. Algebra

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

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

    Opposite = 10cm, adjacent = 17cm. Calculate the angle

    Answer: 30.5°
  4. 4. Ratio

    Simplify: 12:15:6

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

    Find the range of: 37, 34, 7, 22, 29

    Answer: 30

Friday 25 October 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: -41 + (-19)

    Answer: -60
  2. 2. Algebra

    Expand: 4(x + 5)

    Answer: 4x + 20
  3. 3. Geometry

    Opposite = 6cm, hypotenuse = 12cm. Find the angle

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

    Find 32% of 424

    Answer: 135.68
  5. 5. Statistics

    A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 411