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Lintel May 2 - 8 25 questions
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Monday 2 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0038

    Answer: 3.8 × 10-3
  2. 2. Algebra

    Factorise: x² - 8x + 15

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

    Hypotenuse = 39cm, angle = 52°. Find adjacent side

    Answer: 24cm
  4. 4. Ratio

    In ratio 4:1:1, what fraction is the second part?

    Answer: 16
  5. 5. Statistics

    Calculate the mean of: 35, 47, 33, 5, 28, 41, 46, 45

    Answer: 35

Tuesday 3 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    13000

    Answer: 1.3 × 104
  2. 2. Algebra

    Factorise: x² + x - 30

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

    Adjacent = 22cm, angle = 37°. Find opposite

    Answer: 16.6cm
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 25. If 4 of them are 25, 24, 35, 15, what is the missing number?

    Answer: 26

Wednesday 4 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    25000

    Answer: 2.5 × 104
  2. 2. Algebra

    Factorise: x² + 3x - 4

    Answer: (x + 4)(x - 1)
  3. 3. Geometry

    Adjacent = 24cm, angle = 59°. Find opposite

    Answer: 39.9cm
  4. 4. Ratio

    Divide 154 in the ratio 4:3:4

    Answer: 56, 42 and 56
  5. 5. Statistics

    Calculate the mean of: 37, 19, 9, 32, 49, 16, 39

    Answer: 28.7

Thursday 5 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.07

    Answer: 7 × 10-2
  2. 2. Algebra

    Factorise: x² - 6x + 8

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

    Hypotenuse = 38cm, angle = 43°. Find adjacent side

    Answer: 27.8cm
  4. 4. Ratio

    Express the first part of 3:4 as a fraction in simplest form

    Answer: 37
  5. 5. Statistics

    The mean of 5 numbers is 40. If 4 of them are 32, 50, 26, 30, what is the missing number?

    Answer: 62

Friday 6 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    99000000

    Answer: 9.9 × 107
  2. 2. Algebra

    Factorise: x² - 7x + 10

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

    Adjacent = 26cm, angle = 42°. Find opposite

    Answer: 23.4cm
  4. 4. Ratio

    Divide 70 in the ratio 3:3:1

    Answer: 30, 30 and 10
  5. 5. Statistics

    The mean of 4 numbers is 28. If 3 of them are 50, 40, 31, what is the missing number?

    Answer: -9