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Lintel Jan 1 - 7 25 questions
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Monday 31 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 242, 219, and 69

    Answer: 530
  2. 2. Algebra

    Expand: 4(3x + 4)

    Answer: 12x + 16
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio

    Calculate 32.8% of 889

    Answer: 291.59
  5. 5. Statistics

    A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 511

Tuesday 1 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is ∛125?

    Answer: 5
  2. 2. Algebra

    Factorise fully: 8x² + 6x

    Answer: 2x(4x + 3)
  3. 3. Geometry

    A circle has area 615.8cm². Find its radius (dp)

    Answer: 14cm
  4. 4. Ratio

    Calculate 13.4% of 447

    Answer: 59.9
  5. 5. Statistics

    Find the range of: -24, 7, 5, 29, 40

    Answer: 64

Wednesday 2 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 108. What are the numbers?

    Answer: 35, 36, and 37
  2. 2. Algebra

    Find the next term: 1, 4, 10, 19, ...

    Answer: 31
  3. 3. Geometry

    Opposite = 15cm, adjacent = 11cm. Calculate the angle

    Answer: 53.7°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: -13, -20, 25, 0, -27

    Answer: 52

Thursday 3 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 68 + ? = 147

    Answer: 79
  2. 2. Algebra

    Solve: 2x = 22

    Answer: x = 11
  3. 3. Geometry

    Adjacent = 26cm, hypotenuse = 41cm. Find the angle

    Answer: 50.6°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 7 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 713

Friday 4 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 542 + 156

    Answer: 542 + 156 = 698
  2. 2. Algebra

    Solve: 3x = 27

    Answer: x = 9
  3. 3. Geometry

    A right triangle has hypotenuse 5cm and one side 3cm. Find its area

    Answer: 6cm²
  4. 4. Ratio

    Simplify: 24:24:12

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

    Find the range of: -9, -12, 3, 39, 45

    Answer: 57