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Lintel Jan 1 - 7 25 questions
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Monday 15 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 181, 132, and 83

    Answer: 396
  2. 2. Algebra

    Solve: 8x - 7 = 6x + 9

    Answer: x = 8
  3. 3. Geometry

    Find c if a = 13cm and b = 14cm in a right triangle

    Answer: 19.cm
  4. 4. Ratio

    Calculate 39.7% of 553

    Answer: 219.54
  5. 5. Statistics

    Find the range of: 24, -13, 0, 33, 41

    Answer: 54

Tuesday 16 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 991 + 597

    Answer: 1588
  2. 2. Algebra

    Solve: 10x - 9 = 8x + 1

    Answer: x = 5
  3. 3. Geometry

    Opposite = 18cm, adjacent = 11cm. Calculate the angle

    Answer: 58.6°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    Find the range of: -11, 20, 25, 10, 43

    Answer: 54

Wednesday 17 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: 9√2 - 4√2

    Answer: 5√2
  2. 2. Algebra

    Solve: x7 = 2.5714285714286

    Answer: x = 18
  3. 3. Geometry

    A circle has area 530.9cm². Find its radius (dp)

    Answer: 13cm
  4. 4. Ratio

    Calculate 29.9% of 807

    Answer: 241.29
  5. 5. Statistics

    A bag has 4 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 47

Thursday 18 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 37 + ? = 193

    Answer: 156
  2. 2. Algebra

    Solve: x5 = 6.2

    Answer: x = 31
  3. 3. Geometry

    Find c if a = 14cm and b = 22cm in a right triangle

    Answer: 26.cm
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 15, 42, 13, 26, 30, 38, 29

    Answer: 27.6

Friday 19 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 12 + 24 + 13

    Answer: 43
  2. 2. Algebra

    Solve: 5x - 12 = 2x + 12

    Answer: x = 8
  3. 3. Geometry

    Opposite = 10cm, adjacent = 18cm. Calculate the angle

    Answer: 29.1°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 6 red, 5 blue and 4 green sections. Probability of landing on red?

    Answer: 25