Keystones Bedrock — Jan 1 - 7 | Maths Vault

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Bedrock Jan 1 - 7 25 questions

Monday 13 March 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: ⁵⁄₁₁ + ¹⁄₁₁

Answer: ⁶⁄₁₁
2. Algebra

Factorise: 24x + 21

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

Find the area of a circle with radius 7cm

Answer: 153.94cm²
4. Ratio

Calculate 25% of 141

Answer: 35.25
5. Statistics

Find the mean of: 15, 12, 14, 4

Answer: 11.25

Tuesday 14 March 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 31 + 27

Answer: 31 + 27 = 58
2. Algebra

Find the next term: 19, 26, 33, 40, ...

Answer: 47
3. Geometry

Find the area of a circle with radius 8cm

Answer: 201.06cm²
4. Ratio

Simplify the ratio 35:20

Answer: 7:4
5. Statistics

Find the mean of: 12, 16, 12, 20

Answer: 15

Wednesday 15 March 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 91 + 65

Answer: 91 + 65 = 156
2. Algebra

Simplify: 8x + 9x

Answer: 17x
3. Geometry

Find the area of a circle with radius 5cm

Answer: 78.54cm²
4. Ratio

Simplify the ratio 28:12

Answer: 7:3
5. Statistics

Find the mean of: 2, 7, 14, 5, 4

Answer: 6.4

Thursday 16 March 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 12 + 11

Answer: 12 + 11 = 23
2. Algebra

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

Answer: 58
3. Geometry

Opposite = 9cm, hypotenuse = 18cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Calculate 10% of 57

Answer: 5.7
5. Statistics

Find the median of: 8, 13, 13, 15, 10

Answer: 13

Friday 17 March 2023

Keystones #1 · Five questions · Open this day only

1. Number

List the first 5 multiples of 3

Answer: 3, 6, 9, 12, 15
2. Algebra

Simplify: 3x + 5x

Answer: 8x
3. Geometry

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

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 12:32

Answer: 3:8
5. Statistics

Find the range of: 16, 10, 16, 16, 6

Answer: 10