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Cornerstone Jan 1 - 7 25 questions
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Monday 2 September 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 411 + 308

    Answer: 411 + 308 = 719
  2. 2. Algebra

    Solve: x + 5 = 14

    Answer: x = 9
  3. 3. Geometry

    Opposite = 10cm, adjacent = 12cm. Calculate the angle

    Answer: 39.8°
  4. 4. Ratio

    Simplify: 8:12:12

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

    Find the mean of: 2, 8, 4, 7, 18

    Answer: 7.8

Tuesday 3 September 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 87 + 81

    Answer: 87 + 81 = 168
  2. 2. Algebra

    Solve: 5x = 50

    Answer: x = 10
  3. 3. Geometry

    Opposite = 6cm, hypotenuse = 8.5cm. Find the angle

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

    Simplify: 15:15:6

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

    Calculate the mean of: 8, 18, 49, 31, 28, 28, 9

    Answer: 24.4

Wednesday 4 September 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    50000

    Answer: 5 × 104
  2. 2. Algebra

    Solve: 4x = 40

    Answer: x = 10
  3. 3. Geometry

    Opposite = 10cm, hypotenuse = 14.cm. Find the angle

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

    Simplify the ratio 8:16

    Answer: 1:2
  5. 5. Statistics

    What is the probability of rolling a 4 on a fair die?

    Answer: 16

Thursday 5 September 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 91 + ? = 132

    Answer: 41
  2. 2. Algebra

    Factorise: 8x + 14

    Answer: 2(4x + 7)
  3. 3. Geometry

    Calculate the area of a circle with diameter 21cm

    Answer: 346.36cm²
  4. 4. Ratio

    Calculate 50% of 128

    Answer: 64
  5. 5. Statistics

    Calculate the mean of: 15, 27, 5, 39, 8, 22, 21

    Answer: 19.6

Friday 6 September 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 47 + 17

    Answer: 57
  2. 2. Algebra

    Factorise: 8x + 28

    Answer: 4(2x + 7)
  3. 3. Geometry

    Opposite = 10cm, hypotenuse = 14.cm. Find the angle

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

    Simplify the ratio 12:16

    Answer: 3:4
  5. 5. Statistics

    Calculate the mean of: 48, 23, 38, 32, 16, 31, 32, 15

    Answer: 29.4