Volume of Liquids
What is Volume of Liquids
Barbara is a student of grade 3 in Excelsior school. Her mathematics teacher taught the concept of volume of liquids recently. Barbara did not understand the concept very clearly. She also could not grasp how litres and milli litres could be added and worked out in a word problem. So, she asked her tutor, Mrs. Stevenson, to explain it to her. Mrs. Stevenson was more than happy to explain the concept and give some word problems to Barbara.
Barbara: Good afternoon, Mrs. Stevenson.
Mrs. Stevenson: Hello Barbara. Good afternoon. What’s up?
Barbara: I have a few doubts about my recent Maths lesson, volume of liquids.
Mrs. Stevenson: Oh, what about it? Surely, you understand the concept, right?
Barbara: That is the problem. I know it is just the amount of liquid contained in something like a jar.
Mrs. Stevenson: You are right. Perhaps it is with the measurement of volume that you have a problem with.
Barbara: Yes Mrs. Stevenson. How do you measure the volume of a liquid in a container?
Mrs. Stevenson: There are containers with markings on the outside showing litres and milli litres. For example, measuring cups. I have heard that you are into baking. That means you have measuring cups and spoons, right? They have milli litres marked on the outside.
Barbara: Ok. Is volume same as capacity?
Mrs. Stevenson: No, Look. Imagine there is water in a container, Barbara. The amount of water in the water is known as the volume of water.
Barbara: Then what is capacity?
Mrs. Stevenson: Capacity of a container, Barbara, is the amount of water the container can hold.
Barbara: Ok. Could you give me some questions to calculate volume so that I can understand the concept better?
Mrs. Stevenson: Sure. I will give you questions on both volume and capacity.
Q: A water container has a capacity of 1 l 400 ml. What is its capacity in millilitres?
A: The capacity of the water container = 1400 ml.
Q: A glass contains 900 ml of water. A beaker contains 500 ml of water. How much water do they contain altogether?
A: They contain 1400 ml or 1 l 400 ml of water altogether.
Q: Jug A contains 1 l 300 ml of water. Jug B contains 2 l 450 ml of water. What is the total volume of water in the two jugs?
A: The total volume of water in the two jugs is 3 l 750 ml.
Q: Tank A contains 18 l 650 ml of water. Tank B contains 11 l 200 ml less water than Tank A. How much water is there in Tank B?
A: There is 7 l 450 ml of water in Tank B.
Q: A bottle contains 1 l 200 ml of apple juice. Yati buys 4 bottles of apple juice. What is the total volume of apple juice Yati buys?
A: The total volume of apple juice Yati buys is 4 l 800 ml.
Q: A water tank had 10 l 500 ml of water in it. Someone poured the water equally into 5 pails. How much water was there in each pail?
A: There was 2 l 100 ml of water in each pail.
Q: A jug contained 290 ml of juice. Suriana added another 790 ml of juice into the jug. What was the total volume of juice in the jug in litres and millilitres?
A: The total volume of juice in the jug was 1 l 80 ml.
Q: A bottle contained 1250 ml of water. Ronnie spilled some of the water. There was 1050 ml of water left in the bottle. How much water did Ronnie spill?
A: Ronnie spilled 200 ml of water.
Q: Mr. Hakim had 344 l of petrol. He poured the petrol equally into 8 containers. How much petrol was there in each container?
A: There was 43 l of petrol in each container.
Q: A barrel contained some water. Husin used 27 l of water to fill some pails to the brim. The capacity of each pail was 2 l. How many pails were needed to contain 27 l of water?
A: 9 pails were needed to contain the 27 l of water.
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