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Pouring the Punch Drink

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Why do this problem?

This problem requires perseverance and logical thinking. Learners may find it useful to use counters or other equipment and to develop a recording system.

Key questions

How much do you have left in the 9 litre jug if you fill the 7 litre jug? ... the 4 litre jug? ...the 2 litre jug?
How will you remember what you have tried?

Possible extension

Learners could try the Jugs of Wine problem.

Possible support

Using counters or other equipment to represent litres might help some children.