Maths Practice

How many students like soccer, according to the bar chart ?

• 4

• 6

• 8

• 9

What is 25% of 2 hours?

• 45 minutes
• 30 minutes
• 0.3 hours
• 0.5 minutes

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7
• 7 to 5
• 5 to 12
• 7 to 12

How many more people like red than purple?

• 100
• 10
• 2
• 5

At the start of an osmosis investigation, at potato chip had a mass of 2.0g. After one hour, the mass was 1.7g. What is the percentage change?

• -7

• -15

• -18

• -30

An enzyme investigation produces 8 cm³ of gas in 5 minutes. What is the rate of the reaction?

• 0.625 cm³/min

• 1.6 cm³/min

• 3.6 cm³/min

• 8.0 cm³/min

What is the speed of sound in air?

• 123 m/s

• 343 km/s

• 343 m/s

• 10 000 000 m/s

What is the unit of power?

• What

• Wot

• Watt

• wat

How many millimetres are in one metre?

• 10

• 100

• 1000

• 10000

What is the unit of energy?

• Boules

• Kagoul

• Fuel

• Joule