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Cornerstone Jan 1 - 7 25 questions
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Monday 13 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 476 + 736

    Answer: 476 + 736 = 1212
  2. 2. Algebra

    What is the next term? 6, 12, 24, 48, ...

    Answer: 96
  3. 3. Geometry

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

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

    Calculate 50% of 100

    Answer: 50
  5. 5. Statistics

    Calculate the range of: 34, 88, 81, 83, 76, 55

    Answer: 54

Tuesday 14 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra

    Solve: 5x = 20

    Answer: x = 4
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 9.2cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Simplify: 18:12:9

    Answer: 6:4:3
  5. 5. Statistics

    What is the probability of rolling a 2 on a fair die?

    Answer: 1⁄6

Wednesday 15 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 80 + 65

    Answer: 80 + 65 = 145
  2. 2. Algebra

    Factorise: 20x + 28

    Answer: 4(5x + 7)
  3. 3. Geometry

    Opposite = 12cm, adjacent = 20cm. Calculate the angle

    Answer: 31°
  4. 4. Ratio

    Simplify: 16:12:12

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

    Calculate the mean of: 31, 28, 43, 15, 41, 10

    Answer: 28

Thursday 16 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 55 + ? = 180

    Answer: 125
  2. 2. Algebra

    Simplify: 4x + 4x

    Answer: 8x
  3. 3. Geometry

    Find the area of a right triangle with base 12cm and height 5cm

    Answer: 30cm²
  4. 4. Ratio

    Simplify: 16:20:16

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

    Calculate the mean of: 10, 30, 48, 44, 50, 9, 46, 35

    Answer: 34

Friday 17 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 70 + 80

    Answer: 70 + 80 = 150
  2. 2. Algebra

    Collect like terms: 7x + 8y + 7x + 4y

    Answer: 14x + 12y
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 14cm

    Answer: 16.64cm
  4. 4. Ratio

    Simplify: 24:8:12

    Answer: 6:2:3
  5. 5. Statistics

    Find the mean of: 4, 16, 18

    Answer: 12.666666666667