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Lintel Jan 1 - 7 25 questions
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Monday 28 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 260 + 865

    Answer: 260 + 865 = 1125
  2. 2. Algebra

    Solve: 4x + 12 = x - 8

    Answer: x = 6.7
  3. 3. Geometry

    Opposite = 18cm, adjacent = 8cm. Calculate the angle

    Answer: 66°
  4. 4. Ratio

    Calculate 29.3% of 697

    Answer: 204.22
  5. 5. Statistics

    Calculate the mean of: 48, 18, 38, 27, 30, 34, 11, 38

    Answer: 30.5

Tuesday 29 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 1⁄6 + 1⁄2

    Answer: 5⁄6
  2. 2. Algebra

    Collect like terms: 4x + 5y + 3x + 6y

    Answer: 7x + 11y
  3. 3. Geometry

    Adjacent = 29cm, hypotenuse = 44cm. Find the angle

    Answer: 48.8°
  4. 4. Ratio

    Calculate 27.9% of 632

    Answer: 176.33
  5. 5. Statistics

    A spinner has 2 red, 6 blue and 6 green sections. Probability of landing on red?

    Answer: 1⁄7

Wednesday 30 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 998 + 835

    Answer: 1833
  2. 2. Algebra

    Solve: 7x - 3 = 3x + 29

    Answer: x = 8
  3. 3. Geometry

    Opposite = 17cm, adjacent = 19cm. Calculate the angle

    Answer: 41.8°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 5 red, 4 blue and 4 green sections. Probability of landing on red?

    Answer: 5⁄13

Thursday 31 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 74 + ? = 122

    Answer: 48
  2. 2. Algebra

    Factorise fully: 14x² + 4x

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

    Find c if a = 20cm and b = 19cm in a right triangle

    Answer: 27.6cm
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 40, 44, 48, 45, 33, 38

    Answer: 41.3

Friday 1 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 99. What are the numbers?

    Answer: 32, 33, and 34
  2. 2. Algebra

    Factorise fully: 12x² + 9x

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

    A circle has area 78.5cm². Find its radius (dp)

    Answer: 5cm
  4. 4. Ratio

    Simplify: 6:12:4

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

    Calculate the mean of: 21, 49, 34, 35, 10, 29, 49, 46

    Answer: 34.1