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.

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Question 1

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

How much rice is left?

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

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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

3.MD.2

Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), mililiters(ml), and liters (l). Excludes compound units such as cubic centimeters [cc or cm3] and finding the geometric volume of a container.) Add, subtract, multiply, or divide to solve one-step word problems involving masses of objects or volumes of liquids that are given in the same units, for example, by using drawings (such as a beaker with a measurement scale) to represent the problem. (Excludes multiplicative comparison problems.)

9.06 Story problems with mass and volume

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Question 1

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Question 2

Outcomes

3.MD.2

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