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Lintel Dec 13 - 19 25 questions
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Monday 13 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    6500000

    Answer: 6.5 × 106
  2. 2. Algebra

    Factorise: x² + 6x - 16

    Answer: (x + 8)(x - 2)
  3. 3. Geometry

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

    Answer: 32.6cm
  4. 4. Ratio

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

    Answer: 28
  5. 5. Statistics

    The mean of 4 numbers is 20. If 3 of them are 32, 22, 41, what is the missing number?

    Answer: -15

Tuesday 14 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    7700000

    Answer: 7.7 × 106
  2. 2. Algebra

    Factorise: x² + x - 12

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

    Adjacent = 19cm, angle = 51°. Find opposite

    Answer: 23.5cm
  4. 4. Ratio

    Divide 240 in the ratio 1:2:1

    Answer: 60, 120 and 60
  5. 5. Statistics

    Calculate the mean of: 14, 32, 14, 28, 34, 34, 40, 18

    Answer: 26.8

Wednesday 15 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.053

    Answer: 5.3 × 10-2
  2. 2. Algebra

    Factorise: x² - 12x + 35

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

    Hypotenuse = 15cm, angle = 58°. Find adjacent side

    Answer: 7.9cm
  4. 4. Ratio

    Divide 264 in the ratio 4:3:4

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

    The mean of 6 numbers is 24. If 5 of them are 20, 23, 37, 23, 47, what is the missing number?

    Answer: -6

Thursday 16 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    7600000

    Answer: 7.6 × 106
  2. 2. Algebra

    Factorise: x² - 8x + 16

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

    Adjacent = 14cm, angle = 59°. Find opposite

    Answer: 23.3cm
  4. 4. Ratio

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

    Answer: 57
  5. 5. Statistics

    The mean of 6 numbers is 35. If 5 of them are 43, 28, 15, 44, 24, what is the missing number?

    Answer: 56

Friday 17 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0069

    Answer: 6.9 × 10-3
  2. 2. Algebra

    Factorise: x² - 13x + 42

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

    Hypotenuse = 28cm, angle = 44°. Find adjacent side

    Answer: 20.cm
  4. 4. Ratio

    Simplify: 10:12:8

    Answer: 5:6:4
  5. 5. Statistics

    Calculate the mean of: 42, 39, 42, 47, 17, 46

    Answer: 38.8