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Lintel Dec 30 - Jan 5 25 questions
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Monday 30 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00086

    Answer: 8.6 × 10-4
  2. 2. Algebra

    Factorise: x² + 6x - 16

    Answer: (x + 8)(x - 2)
  3. 3. Geometry

    Adjacent = 20cm, angle = 51°. Find opposite

    Answer: 24.7cm
  4. 4. Ratio

    Simplify: 12:6:10

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

    Calculate the mean of: 7, 18, 22, 31, 32, 11, 5, 47

    Answer: 21.6

Tuesday 31 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    19000000

    Answer: 1.9 × 107
  2. 2. Algebra

    Factorise: x² - 8x + 12

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

    Hypotenuse = 37cm, angle = 49°. Find adjacent side

    Answer: 24.3cm
  4. 4. Ratio

    Express the first part of 4:5 as a fraction in simplest form

    Answer: 49
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 15, 30, 40, 26, what is the missing number?

    Answer: 79

Wednesday 1 January 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0007

    Answer: 7 × 10-4
  2. 2. Algebra

    Factorise: x² + 3x - 40

    Answer: (x + 8)(x - 5)
  3. 3. Geometry

    Adjacent = 17cm, angle = 52°. Find opposite

    Answer: 21.8cm
  4. 4. Ratio

    In ratio 3:1:4, what fraction is the second part?

    Answer: 18
  5. 5. Statistics

    Calculate the mean of: 36, 45, 27, 6, 19, 34, 12, 25

    Answer: 25.5

Thursday 2 January 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    520000

    Answer: 5.2 × 105
  2. 2. Algebra

    Factorise: x² + 5x - 6

    Answer: (x + 6)(x - 1)
  3. 3. Geometry

    Hypotenuse = 36cm, angle = 59°. Find adjacent side

    Answer: 18.5cm
  4. 4. Ratio

    In ratio 2:2:4, what fraction is the second part?

    Answer: 28
  5. 5. Statistics

    Calculate the mean of: 39, 14, 11, 33, 21, 14, 36

    Answer: 24

Friday 3 January 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00053

    Answer: 5.3 × 10-4
  2. 2. Algebra

    Factorise: x² - 12x + 35

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

    Adjacent = 22cm, angle = 32°. Find opposite

    Answer: 13.7cm
  4. 4. Ratio

    In ratio 1:4:2, what fraction is the second part?

    Answer: 47
  5. 5. Statistics

    The mean of 4 numbers is 26. If 3 of them are 50, 39, 42, what is the missing number?

    Answer: -27