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Cornerstone Jan 1 - 7 25 questions
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Monday 17 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    53000000

    Answer: 5.3 × 107
  2. 2. Algebra

    Solve: x + 2 = 16

    Answer: x = 14
  3. 3. Geometry

    Opposite = 16cm, adjacent = 19cm. Calculate the angle

    Answer: 40.1°
  4. 4. Ratio

    Find 55% of 465

    Answer: 255.75
  5. 5. Statistics

    Find the range of: 13, 22, 18, 14, 23

    Answer: 10

Tuesday 18 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: -12 + (0) + (-5)

    Answer: -17
  2. 2. Algebra

    Simplify: 9x + 2x

    Answer: 11x
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 7cm

    Answer: 9.22cm
  4. 4. Ratio

    Simplify: 10:4:8

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

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

    Answer: 12

Wednesday 19 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 64 + 88

    Answer: 64 + 88 = 152
  2. 2. Algebra

    Factorise: 5x² + 8x

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

    Find the distance between (3, 2) and (9, 9)

    Answer: 9.22
  4. 4. Ratio

    Find 76% of 153

    Answer: 116.28
  5. 5. Statistics

    A bag has 7 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 712

Thursday 20 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 59 + ? = 151

    Answer: 92
  2. 2. Algebra

    Solve: 9x - 7 = 2x + 35

    Answer: x = 6
  3. 3. Geometry

    Opposite = 19cm, adjacent = 12cm. Calculate the angle

    Answer: 57.7°
  4. 4. Ratio

    Simplify: 12:12:9

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

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

    Answer: 12

Friday 21 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 30 + 83

    Answer: 30 + 83 = 113
  2. 2. Algebra

    Expand: 9(x + 3)

    Answer: 9x + 27
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 19.8cm. Find the angle

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

    Simplify: 20:16:24

    Answer: 5:4:6
  5. 5. Statistics

    Calculate the range of: 62, 27, 41, 35, 63, 27

    Answer: 36