Calculating with time

Overview

Using this Resource

Connecting to the Curriculum

Marking Student Responses

Working with Students

Further Resources

Question 1Change answer

Victor can run 6 lengths of a netball court in 1 minute.

How many lengths could he run in 4 minutes? lengths

b) Fiona can pick 10 apples in 1 minute.

c) Kate is paid $20 for babysitting 5 hours.

How much is she paid for each hour she babysits? $ per hour

d) Colleen is paid $40 for working 4 hours at a supermarket.

How much is she paid for every 30 minutes she works? $ per 30 minutes

Task administration:

This task can be completed with pencil and paper or online (with auto marking displayed to students).

Level:

Curriculum info:

Keywords:

Description of task:

Students perform calculations involving rates of pay, distances, and quantities.

Learning Progression Frameworks

This resource can provide evidence of learning associated with

within the Mathematics Learning Progressions Frameworks.

Answers/responses:

Diagnostic and formative information:

	Common error	Likely calculation	Likely reason
b) ii)	1000 100	100 × 10 10 × 10	Assumes 100 min = 1 hour. Assumes 10 min = 1 hour.
c)	5		Quotes number of hours.
d)	10 20	(40 ÷ 4) × 2	Pay per hour rather than 30 min. Multiplies by 2 rather than dividing.