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Lintel Apr 5 - 11 25 questions
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Monday 5 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    67000000

    Answer: 6.7 × 107
  2. 2. Algebra

    Factorise: x² + x - 2

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

    Adjacent = 12cm, angle = 51°. Find opposite

    Answer: 14.8cm
  4. 4. Ratio

    Divide 117 in the ratio 2:4:3

    Answer: 26, 52 and 39
  5. 5. Statistics

    Calculate the mean of: 21, 49, 45, 48, 38, 46, 19

    Answer: 38

Tuesday 6 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00051

    Answer: 5.1 × 10-4
  2. 2. Algebra

    Factorise: x² + 3x - 28

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

    Hypotenuse = 32cm, angle = 47°. Find adjacent side

    Answer: 21.8cm
  4. 4. Ratio

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

    Answer: 35
  5. 5. Statistics

    Calculate the mean of: 37, 44, 16, 25, 12, 49

    Answer: 30.5

Wednesday 7 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    75000

    Answer: 7.5 × 104
  2. 2. Algebra

    Factorise: x² - 12x + 36

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

    Adjacent = 27cm, angle = 50°. Find opposite

    Answer: 32.2cm
  4. 4. Ratio

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

    Answer: 38
  5. 5. Statistics

    The mean of 5 numbers is 36. If 4 of them are 27, 47, 29, 50, what is the missing number?

    Answer: 27

Thursday 8 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    810000

    Answer: 8.1 × 105
  2. 2. Algebra

    Factorise: x² - 11x + 28

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

    Adjacent = 26cm, angle = 31°. Find opposite

    Answer: 15.6cm
  4. 4. Ratio

    Divide 168 in the ratio 2:2:3

    Answer: 48, 48 and 72
  5. 5. Statistics

    The mean of 6 numbers is 20. If 5 of them are 37, 43, 50, 38, 16, what is the missing number?

    Answer: -64

Friday 9 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.06

    Answer: 6 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 56

    Answer: (x + 8)(x - 7)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 31°. Find adjacent side

    Answer: 32.6cm
  4. 4. Ratio

    Simplify: 24:16:12

    Answer: 6:4:3
  5. 5. Statistics

    Calculate the mean of: 10, 10, 34, 37, 10, 6, 15

    Answer: 17.4