Solve problems involving converting units in different contexts | Exit Quiz | Oak National Academy

Laura and her family are going on holiday. They are spending 2 weeks in Spain and 2 days in Portugal. How long are they on holiday for altogether, in days? ___ days

Answer explanation

One week = seven days, so two weeks = 14 days. 14 days + 2 days = 16 days.

It’s the summer holidays for the children of Oak Academy. They have four weeks and three days off. How long do they have off altogether, in days? ___ days.

Answer explanation

One week = seven days, so four weeks = 28 days. 28 days + 3 days = 31 days.

Laura and Andeep are competing against each other to beat a tricky level on Space Blasters. Laura clears it in exactly two hours and Andeep takes 115 minutes. Which of these statements is correct?

• Laura is quicker by 5 minutes.

• Andeep is quicker by 5 minutes.

• Laura is quicker by 113 minutes.

Answer explanation

One hour = 60 minutes so two hours = 120 minutes. This is 5 minutes slower than 115 minutes. Laura is therefore quicker than Andeep by 5 minutes.

Andeep lives 10 miles away from a theme park. Laura lives 20 km away from the theme park. How much further away does Laura live? ___ km (5 miles is approximately 8 km)

Answer explanation

5 miles is approximate 8 kilometres, so 10 miles is approximately 16 kilometres, which is 4 kilometres less than 20 kilometres. Laura lives 4 km further away.

Laura’s mum has a 2 gallon petrol can which is full. She accidentally knocks it over. 7 litres spill out of it. How much petrol is left in the can? ___ l (1 gallon is approximately 4.5 l)

Answer explanation

1 gallon is approximately 4.5 litres, so 2 gallons is approximately 9 litres, which is 2 litres more than 7 litres. There are 2 litres left in the can.

Laura’s mum has a 2 gallon petrol can. It is not full. It currently holds 5 litres. How much more petrol does it need to fill it? It needs ___ l more to fill it. (1 gallon is approximately 4 l)

Answer explanation

1 gallon is approximately 4.5 litres, so 2 gallons is approximately 9 litres, which is 4 litres more than 5 litres. She needs 4 litres more to fill the can.