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Cornerstone Jan 1 - 7 25 questions
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Monday 19 August 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 469 + 743

    Answer: 469 + 743 = 1212
  2. 2. Algebra

    Factorise: 14x + 12

    Answer: 2(7x + 6)
  3. 3. Geometry

    Opposite = 15cm, hypotenuse = 30cm. Find the angle

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

    Simplify the ratio 9:18

    Answer: 1:2
  5. 5. Statistics

    Calculate the mean of: 47, 23, 15, 45, 50, 18, 28

    Answer: 32.3

Tuesday 20 August 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 48 + 68

    Answer: 48 + 68 = 116
  2. 2. Algebra

    Simplify: 8x + 6x

    Answer: 14x
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 5cm

    Answer: 12.08cm
  4. 4. Ratio

    Simplify the ratio 30:40

    Answer: 3:4
  5. 5. Statistics

    Find the mean of: 7, 17, 12, 12

    Answer: 12

Wednesday 21 August 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 67 + ? = 103

    Answer: 36
  2. 2. Algebra

    Factorise: 2x² + 3x

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Simplify the ratio 16:12

    Answer: 4:3
  5. 5. Statistics

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

    Answer: 511

Thursday 22 August 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 33 + 66

    Answer: 33 + 66 = 99
  2. 2. Algebra

    Solve: 5x = 45

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 58.4°
  4. 4. Ratio

    Calculate 50% of 148

    Answer: 74
  5. 5. Statistics

    Calculate the mean of: 41, 40, 36, 17, 16, 49, 49, 35

    Answer: 35.4

Friday 23 August 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    1200000

    Answer: 1.2 × 106
  2. 2. Algebra

    Simplify: 8x + 2x

    Answer: 10x
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Simplify the ratio 30:15

    Answer: 2:1
  5. 5. Statistics

    Find the mean of: 7, 14, 19, 15

    Answer: 13.75