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9.06 Story problems with mass and volume

Lesson

Are you ready?

Remembering how to measure and estimate mass and volume will help you solve problems in this lesson. Let's give this problem a try. 

Which unit is best to measure the mass of this cup of flour?

  1. Kilograms

    A

    Grams

    B

Learn

When we are solving story problems about measuring and estimating mass and volume, there are certain words which help us to decide which operations to use. Let's see if we can find some clues for addition and subtraction in this video.

Apply

Question 1

Irene buys a $5$5 kg bag of rice, and uses $1$1 kg that evening.

How much rice is left?

Learn

Let's see if we can find some clues for multiplication and division in this video.

Apply

Question 2

A wheelbarrow is being used to carry tiles from one side of the yard to the other. $8$8 tiles, which each have a mass of $10$10 kg, are put in the wheelbarrow.

What is the total mass of tiles in the wheelbarrow?

Remember!

When we have a word problem, we need to think about the story and use the keywords to work out which operators to use. Some words that we may find in a story could be:

addition subtraction multiplication division
more less times divide
add subtract multiply split
give to take away product of out of
plus minus per evenly

Can you think of other words to use for addition, subtraction, multiplication, and division?

Outcomes

MA.3.M.1.2

Solve real-world problems involving any of the four operations with whole-number lengths, masses, weights, temperatures or liquid volumes.

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