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 millilitres are there in 3 L?
Show worked solution
3 × 1000 = 3000 mL.
2 How many 250 mL cups can be filled from 1 L?
Show worked solution
1000 ÷ 250 = 4 cups.
3 A bottle holds 1500 mL. Write that in litres and millilitres.
Show worked solution
1500 mL is one whole litre with 500 mL left, so 1 L 500 mL.
Level 2 · Core
4 A 2 L bottle is used to fill five 300 mL glasses. How many millilitres are left in the bottle?
Show worked solution
Glasses: 5 × 300 = 1500 mL. The bottle held 2000 mL, so 2000 − 1500 = 500 mL left.
5 Which holds more: 750 mL or 1 L?
Show worked solution
1 L is 1000 mL, which is more than 750 mL, so 1 L holds more.
6 A jug holds 600 mL. How many full jugs are needed to fill a 3 L bucket?
Show worked solution
3 L is 3000 mL, and 3000 ÷ 600 = 5 jugs.
Level 3 · Challenge
7 A tank holds 10 L and is filled using a 400 mL jug. How many jugfuls does it take?
Show worked solution
10 L is 10000 mL, and 10000 ÷ 400 = 25 jugfuls.
8 You pour 350 mL from a 2 L bottle three times. How many millilitres are left?
Show worked solution
Poured out: 3 × 350 = 1050 mL. The bottle held 2000 mL, so 2000 − 1050 = 950 mL.
9 A recipe needs 1 L 200 mL of milk and you have 800 mL. How many more millilitres do you need?
Show worked solution
1 L 200 mL is 1200 mL, and 1200 − 800 = 400 mL more.
⭐ Bonus Challenge · only if the rest felt easy
10 A 2 L juice bottle fills six 250 mL cups. How many millilitres are left in the bottle?
Show worked solution
2 L = 2000 mL. Six cups hold 6 × 250 = 1500 mL. Left over: 2000 − 1500 = 500 mL.