Job sharing
This is a level 3 number activity from the Figure It Out series. It relates to stage 6 of the number framework. A PDF of the student activity is included.
About this resource
This resource provides the teachers' notes and answers for one activity from the Figure It Out series. A printable PDF of the student activity can be downloaded from the materials that come with this resource.
- Find fractions of dollar amounts.
Job sharing
Achievement objectives
NA3-1: Use a range of additive and simple multiplicative strategies with whole numbers, fractions, decimals, and percentages.
Required materials
- Figure It Out, Levels 2–3, Number, "Job sharing", page 24
- toy money
- a calculator
- a classmate
See Materials that come with this resource to download:
- Job sharing activity (.pdf)
Activity
This activity prepares students for decimals and builds on the circle activities from page 17.
Students may solve the sharing problems in a variety of ways. Encourage them to reason efficiently. In question 1a, a student might use 100 counters and divide these into equal subsets to find how much each child receives. Although this is effective in getting the solution, it is cumbersome. Another method might be to find equal amounts that add to the total amount.
For example, Rob and Sue will get 50 cents each because 50 + 50 = 100. The most efficient method is to use division; for example,
- 100 ÷ 2 = 50.
In question 1d, when three people share $2, students should realise that 65 cents is the closest possible solution. This will leave 5 cents over.
Writing the amounts in money form is useful preparation for decimals. For example, one half of a dollar is 50 cents, which can be written as $0.50.
1.
a. 50 c each
b. $1 each
c. 60 c each
d. 65 c each and 5 c left over
2.
Group D (Raj, Scott, and Ismael) couldn’t share their money equally.
3.
Answers will vary.
4.
The actual coins drawn could vary, but the amount must equal those drawn here:
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