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Cornerstone Jan 1 - 7 25 questions
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Monday 23 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 28 + 85

    Answer: 28 + 85 = 113
  2. 2. Algebra

    Solve: x + 3 = 19

    Answer: x = 16
  3. 3. Geometry

    Find the area of a right triangle with base 12cm and height 11cm

    Answer: 66cm²
  4. 4. Ratio

    Calculate 25% of 22

    Answer: 5.5
  5. 5. Statistics

    A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 25

Tuesday 24 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 41 + 20

    Answer: 41 + 20 = 61
  2. 2. Algebra

    Find the next term: 23, 29, 35, 41, ...

    Answer: 47
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 7.cm. Find the angle

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

    Simplify: 8:24:12

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

    Find the mean of: 19, 2, 11

    Answer: 10.666666666667

Wednesday 25 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 95 + ? = 192

    Answer: 97
  2. 2. Algebra

    Factorise: 3x² + 3x

    Answer: 3x(x + 1)
  3. 3. Geometry

    Opposite = 15cm, adjacent = 16cm. Calculate the angle

    Answer: 43.2°
  4. 4. Ratio

    Simplify: 12:6:6

    Answer: 2:1:1
  5. 5. Statistics

    Calculate the mean of: 25, 10, 38, 39, 17, 45

    Answer: 29

Thursday 26 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 66 + 72

    Answer: 66 + 72 = 138
  2. 2. Algebra

    Solve: 4x = 60

    Answer: x = 15
  3. 3. Geometry

    Find the area of a circle with radius 9cm

    Answer: 254.47cm²
  4. 4. Ratio

    Simplify: 12:6:12

    Answer: 2:1:2
  5. 5. Statistics

    Calculate the mean of: 28, 18, 25, 23, 50, 5, 48, 48

    Answer: 30.6

Friday 27 December 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 774 + 927

    Answer: 774 + 927 = 1701
  2. 2. Algebra

    Simplify: 7x + 3x

    Answer: 10x
  3. 3. Geometry

    Opposite = 18cm, adjacent = 20cm. Calculate the angle

    Answer: 42°
  4. 4. Ratio

    Simplify: 8:16:16

    Answer: 1:2:2
  5. 5. Statistics

    Find the range of: 41, 12, 36, 30, 24

    Answer: 29