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Lintel Jul 20 - 26 25 questions
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Monday 20 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    770000

    Answer: 7.7 × 105
  2. 2. Algebra

    Factorise: x² - 4x + 4

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

    Hypotenuse = 23cm, angle = 39°. Find adjacent side

    Answer: 17.9cm
  4. 4. Ratio

    Divide 240 in the ratio 4:1:3

    Answer: 120, 30 and 90
  5. 5. Statistics

    The mean of 4 numbers is 28. If 3 of them are 46, 23, 40, what is the missing number?

    Answer: 3

Tuesday 21 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00095

    Answer: 9.5 × 10-4
  2. 2. Algebra

    Factorise: x² + x - 30

    Answer: (x + 6)(x - 5)
  3. 3. Geometry

    Adjacent = 20cm, angle = 41°. Find opposite

    Answer: 17.4cm
  4. 4. Ratio

    Express the first part of 3:5 as a fraction in simplest form

    Answer: 38
  5. 5. Statistics

    Calculate the mean of: 34, 29, 48, 40, 31, 47

    Answer: 38.2

Wednesday 22 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    84000000

    Answer: 8.4 × 107
  2. 2. Algebra

    Factorise: x² + 3x - 10

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

    Hypotenuse = 38cm, angle = 62°. Find adjacent side

    Answer: 17.8cm
  4. 4. Ratio

    Simplify: 9:6:9

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

    Calculate the mean of: 25, 7, 15, 13, 11, 16, 44, 31

    Answer: 20.3

Thursday 23 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0004

    Answer: 4 × 10-4
  2. 2. Algebra

    Factorise: x² - 13x + 42

    Answer: (x - 6)(x - 7)
  3. 3. Geometry

    Adjacent = 22cm, angle = 56°. Find opposite

    Answer: 32.6cm
  4. 4. Ratio

    Divide 91 in the ratio 2:4:1

    Answer: 26, 52 and 13
  5. 5. Statistics

    The mean of 4 numbers is 38. If 3 of them are 28, 38, 49, what is the missing number?

    Answer: 37

Friday 24 July 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.083

    Answer: 8.3 × 10-2
  2. 2. Algebra

    Factorise: x² - 10x + 25

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

    Adjacent = 14cm, angle = 47°. Find opposite

    Answer: 15cm
  4. 4. Ratio

    In ratio 2:3:4, what fraction is the second part?

    Answer: 39
  5. 5. Statistics

    Calculate the mean of: 44, 43, 37, 39, 24, 15, 46

    Answer: 35.4