Lesson 2 — Activity 1: Workplace Addition
Completion requirements
Lesson 2 — Activity 1:
Workplace Addition
We are so used to using addition and subtraction in our lives that by the time we become adults, we do not even think about them as mathematical operations. Many daily activities involve doing some addition or subtraction — at home, in our community, or in our workplace.
Money is the most obvious one. If you buy a slushie that is priced at $2.29 and pay with a $5.00 bill, you expect to get $2.00 and change back. If the shop assistant gave you a loonie instead of a toonie, you would realize that a mistake has been made. This is because you have used subtraction to determine how much change you should receive.
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Weight
is another
area
that is used regularly. Suppose you want to make spaghetti sauce for a large group of people. The recipe calls for 2.5 kg of hamburger. The two packages of hamburger in your freezer weigh 1.35 kg and 1.14 kg. Addition shows that these total 2.49 kg, which
is close enough for the recipe.
Length, for some workers, also involves daily addition and subtraction. A carpenter is building a deck. A
length
of lumber measuring 2.4 m is needed to fill a space. The carpenter measures a piece that looks as though it is long enough. It measures 2.6 m, so by using subtraction, he determines that it is long enough.
Image Source: Pixabay
These are simple examples, but they demonstrate that addition and subtraction are used so much that we often do not even realize that we are doing them.
Image Source: Pixabay