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Lintel Nov 9 - 15 25 questions
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Monday 9 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    72000

    Answer: 7.2 × 104
  2. 2. Algebra

    Factorise: x² + 7x - 8

    Answer: (x + 8)(x - 1)
  3. 3. Geometry

    Hypotenuse = 21cm, angle = 65°. Find adjacent side

    Answer: 8.9cm
  4. 4. Ratio

    Simplify: 6:9:15

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

    The mean of 5 numbers is 21. If 4 of them are 39, 22, 21, 45, what is the missing number?

    Answer: -22

Tuesday 10 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    4800000

    Answer: 4.8 × 106
  2. 2. Algebra

    Factorise: x² + x - 6

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

    Adjacent = 12cm, angle = 30°. Find opposite

    Answer: 6.9cm
  4. 4. Ratio

    Express the first part of 4:6 as a fraction in simplest form

    Answer: 25
  5. 5. Statistics

    The mean of 5 numbers is 39. If 4 of them are 18, 16, 35, 37, what is the missing number?

    Answer: 89

Wednesday 11 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00075

    Answer: 7.5 × 10-4
  2. 2. Algebra

    Factorise: x² - 6x + 8

    Answer: (x - 4)(x - 2)
  3. 3. Geometry

    Hypotenuse = 23cm, angle = 48°. Find adjacent side

    Answer: 15.4cm
  4. 4. Ratio

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

    Answer: 14
  5. 5. Statistics

    Calculate the mean of: 33, 12, 32, 36, 41, 20, 10

    Answer: 26.3

Thursday 12 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    270000

    Answer: 2.7 × 105
  2. 2. Algebra

    Factorise: x² - 11x + 30

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

    Adjacent = 20cm, angle = 49°. Find opposite

    Answer: 23cm
  4. 4. Ratio

    Divide 84 in the ratio 2:4:1

    Answer: 24, 48 and 12
  5. 5. Statistics

    Calculate the mean of: 19, 21, 15, 43, 50, 48

    Answer: 32.7

Friday 13 November 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00067

    Answer: 6.7 × 10-4
  2. 2. Algebra

    Factorise: x² + 2x - 15

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

    Hypotenuse = 21cm, angle = 40°. Find adjacent side

    Answer: 16.cm
  4. 4. Ratio

    Divide 189 in the ratio 2:4:3

    Answer: 42, 84 and 63
  5. 5. Statistics

    The mean of 5 numbers is 25. If 4 of them are 27, 25, 21, 36, what is the missing number?

    Answer: 16