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Lintel Jun 17 - 23 25 questions
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Monday 17 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    240000

    Answer: 2.4 × 105
  2. 2. Algebra

    Factorise: x² - 7x + 10

    Answer: (x - 2)(x - 5)
  3. 3. Geometry

    Adjacent = 21cm, angle = 36°. Find opposite

    Answer: 15.3cm
  4. 4. Ratio

    Express the first part of 2:4 as a fraction in simplest form

    Answer: 13
  5. 5. Statistics

    The mean of 6 numbers is 23. If 5 of them are 20, 23, 47, 49, 40, what is the missing number?

    Answer: -41

Tuesday 18 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    65000

    Answer: 6.5 × 104
  2. 2. Algebra

    Factorise: x² - 11x + 28

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

    Adjacent = 25cm, angle = 60°. Find opposite

    Answer: 43.3cm
  4. 4. Ratio

    Express the first part of 2:5 as a fraction in simplest form

    Answer: 27
  5. 5. Statistics

    The mean of 4 numbers is 26. If 3 of them are 29, 19, 37, what is the missing number?

    Answer: 19

Wednesday 19 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0009

    Answer: 9 × 10-4
  2. 2. Algebra

    Factorise: x² + 2x - 15

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

    Hypotenuse = 39cm, angle = 26°. Find adjacent side

    Answer: 35.cm
  4. 4. Ratio

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

    Answer: 35
  5. 5. Statistics

    Calculate the mean of: 15, 26, 24, 24, 33, 46, 47, 6

    Answer: 27.6

Thursday 20 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    66000000

    Answer: 6.6 × 107
  2. 2. Algebra

    Factorise: x² + 6x - 7

    Answer: (x + 7)(x - 1)
  3. 3. Geometry

    Adjacent = 24cm, angle = 39°. Find opposite

    Answer: 19.4cm
  4. 4. Ratio

    Divide 192 in the ratio 1:4:3

    Answer: 24, 96 and 72
  5. 5. Statistics

    The mean of 6 numbers is 27. If 5 of them are 40, 18, 40, 29, 19, what is the missing number?

    Answer: 16

Friday 21 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.097

    Answer: 9.7 × 10-2
  2. 2. Algebra

    Factorise: x² + 5x - 24

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

    Hypotenuse = 27cm, angle = 32°. Find adjacent side

    Answer: 22.9cm
  4. 4. Ratio

    Express the first part of 6:2 as a fraction in simplest form

    Answer: 34
  5. 5. Statistics

    Calculate the mean of: 14, 32, 14, 15, 14, 13, 8, 13

    Answer: 15.4