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Lintel May 23 - 29 25 questions
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Monday 23 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.022

    Answer: 2.2 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 2

    Answer: (x + 2)(x - 1)
  3. 3. Geometry

    Adjacent = 13cm, angle = 42°. Find opposite

    Answer: 11.7cm
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 33, 15, 50, 15, 8, 48

    Answer: 28.2

Tuesday 24 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0059

    Answer: 5.9 × 10-3
  2. 2. Algebra

    Factorise: x² + 2x - 35

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

    Adjacent = 15cm, angle = 43°. Find opposite

    Answer: 14cm
  4. 4. Ratio

    Divide 168 in the ratio 1:2:3

    Answer: 28, 56 and 84
  5. 5. Statistics

    The mean of 4 numbers is 22. If 3 of them are 48, 35, 20, what is the missing number?

    Answer: -15

Wednesday 25 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    6200000

    Answer: 6.2 × 106
  2. 2. Algebra

    Factorise: x² - 10x + 21

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

    Hypotenuse = 20cm, angle = 63°. Find adjacent side

    Answer: 9.cm
  4. 4. Ratio

    Simplify: 18:12:12

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

    Calculate the mean of: 19, 13, 31, 19, 35, 11, 28

    Answer: 22.3

Thursday 26 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.027

    Answer: 2.7 × 10-2
  2. 2. Algebra

    Factorise: x² - 5x + 6

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

    Adjacent = 22cm, angle = 36°. Find opposite

    Answer: 16cm
  4. 4. Ratio

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

    Answer: 57
  5. 5. Statistics

    Calculate the mean of: 6, 20, 30, 32, 40, 11, 44, 22

    Answer: 25.6

Friday 27 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    5800000

    Answer: 5.8 × 106
  2. 2. Algebra

    Factorise: x² + 4x - 5

    Answer: (x + 5)(x - 1)
  3. 3. Geometry

    Hypotenuse = 20cm, angle = 45°. Find adjacent side

    Answer: 14.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 4 numbers is 40. If 3 of them are 23, 23, 45, what is the missing number?

    Answer: 69