Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown. A ⭐ Bonus Challenge at the end is extra credit — skip it if the rest was hard work.
Level 1 · Warm-up
1 How many kilograms are there in 1 tonne?
Show worked solution
1 tonne is 1000 kg.
2 Which unit would you use to weigh a truck?
Show worked solution
A truck is weighed in tonnes — kilograms would give a huge number.
3 How many kilograms are there in 3 tonnes?
Show worked solution
3 × 1000 = 3000 kg.
Level 2 · Core
4 A car weighs 1500 kg. Write that in tonnes and kilograms. (type like 1t500kg)
Show worked solution
1500 kg is 1 whole tonne with 500 kg left: 1 t 500 kg.
5 Which unit would you use to weigh a letter?
Show worked solution
A letter is weighed in grams.
6 A lift can hold 800 kg. Can it carry a load of 1 tonne?
Show worked solution
1 tonne is 1000 kg, which is more than 800 kg, so no.
Level 3 · Challenge
7 A truck carries 4 loads of 750 kg. How many tonnes is that altogether?
Show worked solution
4 × 750 = 3000 kg, which is 3 tonnes.
8 A bridge limit is 5 tonnes. A truck weighs 2 t 400 kg and carries 1800 kg of cargo. Is it under the limit?
Show worked solution
Truck 2400 kg + cargo 1800 kg = 4200 kg, and the limit is 5000 kg, so yes — with 800 kg to spare.
9 How many 250 kg crates make up 2 tonnes?
Show worked solution
2 tonnes is 2000 kg, and 2000 ÷ 250 = 8 crates.