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Lintel Dec 31 - Jan 6 25 questions
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Monday 31 December 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00029

    Answer: 2.9 × 10-4
  2. 2. Algebra

    Factorise: x² - 12x + 35

    Answer: (x - 5)(x - 7)
  3. 3. Geometry

    Hypotenuse = 33cm, angle = 60°. Find adjacent side

    Answer: 16.5cm
  4. 4. Ratio

    Divide 300 in the ratio 3:4:3

    Answer: 90, 120 and 90
  5. 5. Statistics

    The mean of 5 numbers is 29. If 4 of them are 16, 16, 33, 25, what is the missing number?

    Answer: 55

Tuesday 1 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0005

    Answer: 5 × 10-4
  2. 2. Algebra

    Factorise: x² + 4x - 12

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

    Hypotenuse = 34cm, angle = 49°. Find adjacent side

    Answer: 22.3cm
  4. 4. Ratio

    Simplify: 8:6:12

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

    Calculate the mean of: 29, 18, 37, 42, 34, 22, 46, 11

    Answer: 29.9

Wednesday 2 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    1400000

    Answer: 1.4 × 106
  2. 2. Algebra

    Factorise: x² + 2x - 3

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

    Adjacent = 24cm, angle = 35°. Find opposite

    Answer: 16.8cm
  4. 4. Ratio

    Express the first part of 4:6 as a fraction in simplest form

    Answer: 2⁄5
  5. 5. Statistics

    Calculate the mean of: 24, 40, 10, 15, 20, 13, 40, 32

    Answer: 24.3

Thursday 3 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.084

    Answer: 8.4 × 10-2
  2. 2. Algebra

    Factorise: x² - 7x + 12

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

    Hypotenuse = 17cm, angle = 37°. Find adjacent side

    Answer: 13.6cm
  4. 4. Ratio

    Simplify: 8:12:4

    Answer: 2:3:1
  5. 5. Statistics

    The mean of 4 numbers is 27. If 3 of them are 20, 38, 41, what is the missing number?

    Answer: 9

Friday 4 January 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00041

    Answer: 4.1 × 10-4
  2. 2. Algebra

    Factorise: x² - 11x + 28

    Answer: (x - 4)(x - 7)
  3. 3. Geometry

    Hypotenuse = 33cm, angle = 65°. Find adjacent side

    Answer: 13.9cm
  4. 4. Ratio

    In ratio 1:1:4, what fraction is the second part?

    Answer: 1⁄6
  5. 5. Statistics

    Calculate the mean of: 5, 14, 44, 27, 38, 15, 13, 49

    Answer: 25.6