Keystones Bedrock — Jan 1 - 7 | Maths Vault

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Bedrock Jan 1 - 7 25 questions

Monday 19 June 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: ⁶⁄₁₀ + ²⁄₁₀

Answer: ⁴⁄₅
2. Algebra

Simplify: 2x + 6x

Answer: 8x
3. Geometry

Opposite = 8cm, hypotenuse = 16cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 10:35

Answer: 2:7
5. Statistics

Find the mean of: 19, 13, 4, 4

Answer: 10

Tuesday 20 June 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 30 + 28

Answer: 30 + 28 = 58
2. Algebra

Find the next term: 7, 13, 19, 25, ...

Answer: 31
3. Geometry

Opposite = 6cm, hypotenuse = 8.5cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 12:6

Answer: 2:1
5. Statistics

Find the mean of: 12, 14, 9, 15, 16

Answer: 13.2

Wednesday 21 June 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 40 + 78

Answer: 40 + 78 = 118
2. Algebra

Find the next term: 8, 10, 12, 14, ...

Answer: 16
3. Geometry

Find the area of a circle with radius 7cm

Answer: 153.94cm²
4. Ratio

In ratio 3:2, the difference between shares is 14. What are the shares?

Answer: 42 and 28
5. Statistics

Find the mean of: 16, 6, 10, 12

Answer: 11

Thursday 22 June 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 23 + 33

Answer: 23 + 33 = 56
2. Algebra

Simplify: 6x + 3x

Answer: 9x
3. Geometry

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

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 28:20

Answer: 7:5
5. Statistics

Find the mean of: 6, 2, 19

Answer: 9

Friday 23 June 2023

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 94 + 70

Answer: 94 + 70 = 164
2. Algebra

Solve: x + 9 = 18

Answer: x = 9
3. Geometry

Opposite = 11cm, hypotenuse = 12.7cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 8:16

Answer: 1:2
5. Statistics

Find the mean of: 14, 20, 2, 14

Answer: 12.5