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Cornerstone Jan 1 - 7 25 questions
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Monday 2 January 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 13 + 35

    Answer: 1415
  2. 2. Algebra

    Solve: 9x + 7 = 4x + 52

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 50.2°
  4. 4. Ratio

    Simplify: 8:24:8

    Answer: 1:3:1
  5. 5. Statistics

    Calculate the mean of: 27, 24, 37, 30, 8, 13

    Answer: 23.2

Tuesday 3 January 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 29 + 73

    Answer: 29 + 73 = 102
  2. 2. Algebra

    Factorise: 3x² + 7x

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

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

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

    Find 58% of 288

    Answer: 167.04
  5. 5. Statistics

    Find the mean of: 16, 13, 20, 17, 15

    Answer: 16.2

Wednesday 4 January 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 82 + 42

    Answer: 82 + 42 = 124
  2. 2. Algebra

    Solve: 2x = 22

    Answer: x = 11
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 11.3cm. Find the angle

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

    Calculate 25% of 49

    Answer: 12.25
  5. 5. Statistics

    Calculate the range of: 57, 32, 54, 68, 37, 45

    Answer: 36

Thursday 5 January 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 53 + ? = 123

    Answer: 70
  2. 2. Algebra

    Simplify: 8x + 4x

    Answer: 12x
  3. 3. Geometry

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

    Answer: 39.8°
  4. 4. Ratio

    Simplify the ratio 20:28

    Answer: 5:7
  5. 5. Statistics

    Find the mean of: 16, 19, 12, 4

    Answer: 12.75

Friday 6 January 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 79 + 60

    Answer: 79 + 60 = 139
  2. 2. Algebra

    Solve: x + 12 = 25

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Simplify the ratio 16:8

    Answer: 2:1
  5. 5. Statistics

    Find the range of: 40, 26, 30, 19, 30

    Answer: 21