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Lintel Jan 17 - 23 25 questions
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Monday 17 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0023

    Answer: 2.3 × 10-3
  2. 2. Algebra

    Factorise: x² + 3x - 18

    Answer: (x + 6)(x - 3)
  3. 3. Geometry

    Adjacent = 13cm, angle = 32°. Find opposite

    Answer: 8.cm
  4. 4. Ratio

    Express the first part of 3:6 as a fraction in simplest form

    Answer: 13
  5. 5. Statistics

    The mean of 6 numbers is 20. If 5 of them are 19, 34, 37, 41, 24, what is the missing number?

    Answer: -35

Tuesday 18 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0039

    Answer: 3.9 × 10-3
  2. 2. Algebra

    Factorise: x² + 5x - 24

    Answer: (x + 8)(x - 3)
  3. 3. Geometry

    Adjacent = 19cm, angle = 48°. Find opposite

    Answer: 21.cm
  4. 4. Ratio

    Simplify: 9:18:12

    Answer: 3:6:4
  5. 5. Statistics

    The mean of 4 numbers is 34. If 3 of them are 43, 16, 22, what is the missing number?

    Answer: 55

Wednesday 19 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    5400000

    Answer: 5.4 × 106
  2. 2. Algebra

    Factorise: x² - 14x + 49

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

    Hypotenuse = 33cm, angle = 40°. Find adjacent side

    Answer: 25.3cm
  4. 4. Ratio

    Express the first part of 2:3 as a fraction in simplest form

    Answer: 25
  5. 5. Statistics

    Calculate the mean of: 13, 21, 35, 39, 5, 21, 50

    Answer: 26.3

Thursday 20 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0005

    Answer: 5 × 10-4
  2. 2. Algebra

    Factorise: x² - 8x + 12

    Answer: (x - 6)(x - 2)
  3. 3. Geometry

    Adjacent = 21cm, angle = 37°. Find opposite

    Answer: 15.8cm
  4. 4. Ratio

    Simplify: 15:18:15

    Answer: 5:6:5
  5. 5. Statistics

    The mean of 5 numbers is 22. If 4 of them are 36, 19, 50, 41, what is the missing number?

    Answer: -36

Friday 21 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    6900000

    Answer: 6.9 × 106
  2. 2. Algebra

    Factorise: x² + x - 20

    Answer: (x + 5)(x - 4)
  3. 3. Geometry

    Hypotenuse = 32cm, angle = 32°. Find adjacent side

    Answer: 27.cm
  4. 4. Ratio

    Divide 126 in the ratio 2:2:3

    Answer: 36, 36 and 54
  5. 5. Statistics

    Calculate the mean of: 6, 8, 19, 33, 49, 41, 21

    Answer: 25.3