Pouring from one tank into another is in the Primary 5 Volume chapter. The lesson film is the one Mathweave teaches this skill with in Primary 6, and the practice set below is chosen for Primary 5.
Question 1 of 4 · Basic · free to tryAll the syrup in a jug was poured into one large bottle. It was 180 ml short…All the syrup in a jug was…
All the syrup in a jug was poured into one large bottle. It was 180 ml short of filling the large bottle to the top. The same jug of syrup would instead have filled one small bottle to the top and left 220 ml over. A small bottle holds 500 ml. Find the capacity of the large bottle.
How do you solve P5 pouring between containers questions?
This page teaches problems where a liquid is poured from one container into another, using the Primary 5 outcomes on the volume of liquid in a rectangular tank and on litres, millilitres and cm³.
What your child learns here
This page teaches problems where a liquid is poured from one container into another, using the Primary 5 outcomes on the volume of liquid in a rectangular tank and on litres, millilitres and cm³. The amount of liquid stays the same as it moves, so your child compares it with the capacity of each container.
Pouring changes the shape of a liquid but never its volume.
If a bottle is 180 ml short of full, its capacity is the liquid in it plus 180 ml.
The volume of water in a rectangular tank is length × breadth × the depth of the water, not the height of the tank.
Water that overflows is the volume poured in minus the space the container has.
Write every volume in the same unit, millilitres or cm³, before adding or subtracting.
Does the answer make sense?
In Question 1 the syrup is 500 ml plus 220 ml, which is 720 ml, and the large bottle still needs 180 ml more. So the large bottle must hold more than the 720 ml of syrup, and far more than the small bottle's 500 ml; 900 ml passes both tests.
How to practise these questions
Question 1 is free: a jug of syrup fills a 500 ml bottle with 220 ml left over, but falls 180 ml short of filling a large bottle, and your child finds the large bottle's capacity. The Basic question trains building a capacity from what is poured and what is short or left over. Intermediate questions compare bottles of two sizes holding the same juice, and find the capacity of a container turned upside down from the water and the air inside it. The Challenge question pours one tank of water into a smaller tank and finds how much spills over the brim. If a step is unclear, open its worked solution and try the question again later from Revision.
Questions parents ask
What stays the same when water is poured into another container? The volume stays the same, as long as none is spilled. Only its shape changes to fit the new container.
Does my child find a new water level in Primary 5? Not on this page. Finding the height of water from its volume and base area is a Primary 6 outcome, so these questions stop at volumes and capacities.
How do you work out how much water overflows? Find the volume of water poured in and the space in the container, both in cm³. If the water is more than the space, the overflow is the water minus the space.
