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Lintel Jan 1 - 7 25 questions
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Monday 13 September 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 760 + 727

    Answer: 760 + 727 = 1487
  2. 2. Algebra

    Factorise: 6x² + 2x

    Answer: 2x(3x + 1)
  3. 3. Geometry

    Adjacent = 22cm, hypotenuse = 30cm. Find the angle

    Answer: 42.8°
  4. 4. Ratio

    Simplify: 6:12:6

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

    Calculate the mean of: 33, 22, 5, 6, 44, 31, 34, 20

    Answer: 24.4

Tuesday 14 September 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 468 + 664

    Answer: 468 + 664 = 1132
  2. 2. Algebra

    What is the next term? 3, 12, 48, 192, ...

    Answer: 768
  3. 3. Geometry

    Find perimeter: adjacent = 18cm, angle = 60°

    Answer: 85.2cm
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 4 red, 6 blue and 3 green sections. Probability of landing on red?

    Answer: 4⁄13

Wednesday 15 September 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄4 + 1⁄2 + 4⁄5

    Answer: 41⁄20
  2. 2. Algebra

    Solve: x⁄4 = 7.75

    Answer: x = 31
  3. 3. Geometry

    Opposite = 9cm, adjacent = 14cm. Calculate the angle

    Answer: 32.7°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 32, 27, 10, 13, 46, 47

    Answer: 29.2

Thursday 16 September 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 61 + ? = 138

    Answer: 77
  2. 2. Algebra

    Solve: x⁄4 = 4

    Answer: x = 16
  3. 3. Geometry

    Find c if a = 9cm and b = 15cm in a right triangle

    Answer: 17.5cm
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 10, 50, 12, 34, 24, 17, 38

    Answer: 26.4

Friday 17 September 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 102. What are the numbers?

    Answer: 33, 34, and 35
  2. 2. Algebra

    Solve: 3x = 36

    Answer: x = 12
  3. 3. Geometry

    Opposite = 19cm, adjacent = 8cm. Calculate the angle

    Answer: 67.2°
  4. 4. Ratio

    Calculate 25.4% of 893

    Answer: 226.82
  5. 5. Statistics

    A spinner has 2 red, 2 blue and 5 green sections. Probability of landing on red?

    Answer: 2⁄9