Labelling envelopes

Labelling envelopes

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources


Connor had a job putting labels on envelopes. He worked at a steady pace and found that he had put on 450 labels in 1 ½ hours.
 

a)

How many labels did he put on each minute? __________
 

b)

How long did it take him to put on a single label? __________ seconds.
 

c)

At this rate, how many labels will he put on if he works for 7 ½ hours? __________
Task administration: 
This task is completed with pencil and paper only.
Level:
5
Curriculum info: 
Maths, Number and Algebra, Number Strategies
Keywords: 
rates, time
Description of task: 
Students make rate calculations based on the number of labels put on envelopes in one and a half hours.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Multiplicative thinking, sets 8-9
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y10 (11/1999)

a)

5

easy

b)

12 [Accept 60 ÷ answer to a)]

easy

c)

2250 [Accept 27 000 ÷ answer to b)]

moderate
 
Diagnostic and formative information: 

 

Common error

Likely calculation

Likely reason

c)

3375

450 × 7.5

Assumes 450 labels per hour (rather than 1.5 hours).