Keystones Bedrock — Jan 1 - 7 | Maths Vault

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Bedrock Jan 1 - 7 25 questions

Monday 25 July 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: -1 + 2

Answer: 1
2. Algebra

Simplify: 4x + 3x

Answer: 7x
3. Geometry

Opposite = 10cm, hypotenuse = 11.5cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 10:14

Answer: 5:7
5. Statistics

Find the mean of: 7, 8, 18, 19

Answer: 13

Tuesday 26 July 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 35 + 26

Answer: 35 + 26 = 61
2. Algebra

Find the next term: 22, 31, 40, 49, ...

Answer: 58
3. Geometry

Opposite = 14cm, hypotenuse = 28cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 24:28

Answer: 6:7
5. Statistics

Find the mean of: 17, 10, 19, 9

Answer: 13.75

Wednesday 27 July 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: ⁴⁄₈ + ²⁄₈

Answer: ³⁄₄
2. Algebra

Factorise: 20x + 32

Answer: 4(5x + 8)
3. Geometry

Opposite = 5cm, hypotenuse = 10cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 24:18

Answer: 4:3
5. Statistics

Find the range of: 9, 39, 31, 12, 10

Answer: 30

Thursday 28 July 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 43 + 37

Answer: 43 + 37 = 80
2. Algebra

Simplify: 3x + 6x

Answer: 9x
3. Geometry

Opposite = 12cm, hypotenuse = 17cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 10% of 22

Answer: 2.2
5. Statistics

Find the mean of: 5, 12, 6, 13

Answer: 9

Friday 29 July 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 16 + 22

Answer: 16 + 22 = 38
2. Algebra

Factorise: 32x + 20

Answer: 4(8x + 5)
3. Geometry

Opposite = 12cm, hypotenuse = 13.9cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 24:28

Answer: 6:7
5. Statistics

What is the probability of rolling a 4 on a fair die?

Answer: ¹⁄₆