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
1 750 mL and 250 mL are poured into the same jug. How many litres is that?
Show worked solution
1 000 mL = 1 L.
2 Convert 2 L to millilitres, and 2 500 mL to litres.
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2 L = 2 000 mL. 2 500 mL = 2.5 L.
3 A 1 L bottle is full. 260 mL is poured out. How many millilitres are left?
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740 mL.
Level 2 · Core
4 A jug has 800 mL of juice. 150 mL is drunk, then 400 mL is added. How much is in the jug now?
Show worked solution
800 − 150 = 650; 650 + 400 = 1 050 mL.
5 1.5 L of juice is shared equally into 6 glasses. How much is in each glass? How many litres do 4 of those glasses hold?
Show worked solution
1 500 ÷ 6 = 250 mL each. 4 × 250 = 1 000 mL = 1 L.
6 A 2 L jug is full. Three glasses of 350 mL are poured out. How many millilitres are left?
Show worked solution
2 000 − 1 050 = 950 mL.
Level 3 · Challenge
7 Sooyoung has 250 mL of cordial in a glass. She drinks 10 mL, then tops the glass up to the 500 mL mark with water from a full 1 L bottle.1 After drinking, the glass holds 240 mL.
2 260 mL of water is poured from the bottle.
3 The bottle has 750 mL left.
Which statements are correct?
2 260 mL of water is poured from the bottle.
3 The bottle has 750 mL left.
Which statements are correct?
Show worked solution
240 (1 ✓). 500 − 240 = 260 (2 ✓). 1 000 − 260 = 740, not 750 (3 ✗). 1 and 2.
8 A tap fills 200 mL every minute. How long does it take to fill 1 L? How many litres does it fill in 6 minutes?
Show worked solution
1 000 ÷ 200 = 5 minutes. 6 × 200 = 1 200 mL = 1.2 L.
9 A tank holds 5 L of water and leaks 150 mL every hour. How many millilitres are left after 8 hours?
Show worked solution
5 000 − 1 200 = 3 800 mL.