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Lintel May 17 - 23 25 questions
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Monday 17 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0027

    Answer: 2.7 × 10-3
  2. 2. Algebra

    Factorise: x² - 11x + 28

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

    Adjacent = 11cm, angle = 41°. Find opposite

    Answer: 9.6cm
  4. 4. Ratio

    Divide 210 in the ratio 2:2:3

    Answer: 60, 60 and 90
  5. 5. Statistics

    The mean of 6 numbers is 39. If 5 of them are 48, 35, 18, 40, 27, what is the missing number?

    Answer: 66

Tuesday 18 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00087

    Answer: 8.7 × 10-4
  2. 2. Algebra

    Factorise: x² - 5x + 6

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

    Adjacent = 10cm, angle = 36°. Find opposite

    Answer: 7.3cm
  4. 4. Ratio

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

    Answer: 23
  5. 5. Statistics

    The mean of 4 numbers is 24. If 3 of them are 30, 38, 23, what is the missing number?

    Answer: 5

Wednesday 19 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    17000

    Answer: 1.7 × 104
  2. 2. Algebra

    Factorise: x² + 5x - 24

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

    Hypotenuse = 33cm, angle = 37°. Find adjacent side

    Answer: 26.4cm
  4. 4. Ratio

    Divide 234 in the ratio 2:4:3

    Answer: 52, 104 and 78
  5. 5. Statistics

    Calculate the mean of: 26, 48, 50, 8, 15, 9, 9

    Answer: 23.6

Thursday 20 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0055

    Answer: 5.5 × 10-3
  2. 2. Algebra

    Factorise: x² + 3x - 10

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

    Adjacent = 27cm, angle = 46°. Find opposite

    Answer: 28cm
  4. 4. Ratio

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

    Answer: 58
  5. 5. Statistics

    The mean of 4 numbers is 40. If 3 of them are 47, 16, 35, what is the missing number?

    Answer: 62

Friday 21 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    85000

    Answer: 8.5 × 104
  2. 2. Algebra

    Factorise: x² - 9x + 14

    Answer: (x - 7)(x - 2)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 42°. Find adjacent side

    Answer: 28.2cm
  4. 4. Ratio

    Simplify: 15:9:9

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

    Calculate the mean of: 32, 26, 8, 39, 41, 30

    Answer: 29.3