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Lintel May 9 - 15 25 questions
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Monday 9 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    300000

    Answer: 3 × 105
  2. 2. Algebra

    Factorise: x² - 11x + 30

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

    Adjacent = 10cm, angle = 40°. Find opposite

    Answer: 8.4cm
  4. 4. Ratio

    Divide 84 in the ratio 4:2:1

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

    The mean of 4 numbers is 33. If 3 of them are 33, 33, 35, what is the missing number?

    Answer: 31

Tuesday 10 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    620000

    Answer: 6.2 × 105
  2. 2. Algebra

    Factorise: x² - 7x + 12

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

    Hypotenuse = 29cm, angle = 25°. Find adjacent side

    Answer: 26.3cm
  4. 4. Ratio

    Divide 88 in the ratio 1:2:1

    Answer: 22, 44 and 22
  5. 5. Statistics

    The mean of 6 numbers is 30. If 5 of them are 20, 30, 45, 21, 47, what is the missing number?

    Answer: 17

Wednesday 11 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0049

    Answer: 4.9 × 10-3
  2. 2. Algebra

    Factorise: x² + 6x - 16

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

    Adjacent = 23cm, angle = 34°. Find opposite

    Answer: 15.5cm
  4. 4. Ratio

    Simplify: 15:15:6

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

    Calculate the mean of: 30, 45, 26, 44, 25, 38, 31, 10

    Answer: 31.1

Thursday 12 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    9100000

    Answer: 9.1 × 106
  2. 2. Algebra

    Factorise: x² + x - 42

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

    Hypotenuse = 32cm, angle = 46°. Find adjacent side

    Answer: 22.2cm
  4. 4. Ratio

    Simplify: 12:8:8

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

    Calculate the mean of: 12, 27, 29, 7, 27, 20, 9, 41

    Answer: 21.5

Friday 13 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0094

    Answer: 9.4 × 10-3
  2. 2. Algebra

    Factorise: x² - 14x + 49

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

    Adjacent = 19cm, angle = 36°. Find opposite

    Answer: 13.8cm
  4. 4. Ratio

    Express the first part of 2:3 as a fraction in simplest form

    Answer: 25
  5. 5. Statistics

    The mean of 4 numbers is 34. If 3 of them are 29, 24, 17, what is the missing number?

    Answer: 66