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Cornerstone Jan 1 - 7 25 questions
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Monday 29 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 512 + 112

    Answer: 12
  2. 2. Algebra

    Expand: 3(x + 5)

    Answer: 3x + 15
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Find 16% of 199

    Answer: 31.84
  5. 5. Statistics

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

    Answer: 12

Tuesday 30 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 58 + 70

    Answer: 58 + 70 = 128
  2. 2. Algebra

    Solve: x + 14 = 21

    Answer: x = 7
  3. 3. Geometry

    Calculate the area of a circle with diameter 10cm

    Answer: 78.54cm²
  4. 4. Ratio

    Simplify: 10:6:6

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

    Find the range of: 23, 10, 37, 9, 18

    Answer: 28

Wednesday 31 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 231 + 164

    Answer: 231 + 164 = 395
  2. 2. Algebra

    Solve: 3x = 12

    Answer: x = 4
  3. 3. Geometry

    Opposite = 7cm, hypotenuse = 9.9cm. Find the angle

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

    Simplify: 12:6:15

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

    Calculate the mean of: 47, 24, 11, 50, 22, 45, 39

    Answer: 34

Thursday 1 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 37 + ? = 188

    Answer: 151
  2. 2. Algebra

    Collect like terms: 6x + 2y + 8x + 7y

    Answer: 14x + 9y
  3. 3. Geometry

    Opposite = 13cm, hypotenuse = 15cm. Find the angle

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

    Find 32% of 499

    Answer: 159.68
  5. 5. Statistics

    Find the mean of: 8, 14, 11

    Answer: 11

Friday 2 September 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 46 + 79

    Answer: 46 + 79 = 125
  2. 2. Algebra

    Collect like terms: 7x + 5y + 7x + 3y

    Answer: 14x + 8y
  3. 3. Geometry

    Calculate the perimeter of a right triangle with sides 5cm and 9cm

    Answer: 24.3cm
  4. 4. Ratio

    Simplify: 6:10:8

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

    What is the probability of rolling a 6 on a fair die?

    Answer: 16