Change from $10

Change from $10

Auto-markingPencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about working out how much change some children should get.
Three children had $10.00 each to spend.
The following table shows what they bought.

Question 1Change answer

Write in how much change each child should get from $10.00.
Person What they bought Change from $10.00
a)  Anna
illustration: hair brush
Hairbush cost $6.00
 $
b)  Maraea
umbrella-md.png
Umbrella cost $8.50
 $
c)  Tim
  kite-md.png
Kite cost $7.20
 $
 
Task administration: 
This task can be completed with pencil and paper or online (with auto-marking displayed to students).
Level:
2
Curriculum info: 
Maths, Number and Algebra, Number Strategies
Keywords: 
money, change, addition, subtraction
Description of task: 
Students work out the change from $10 for a number of purchases.
Curriculum Links: 
This resource can help to identify students' ability to use basic facts and knowledge of place value and partitioning whole numbers to solve subtraction problems.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Additive thinking, set 5
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
   Y4 (06/1999)
a) $4.00 very easy
b) $1.50 difficult
c) $2.80 very difficult
Diagnostic and formative information: 
  Common error Likely reason
b)
c)		 2.50
3.20 ( or 2.20)		 "Won't go" subtraction error. Subtracts smaller number of cents (0) from larger rather than vice versa.
b)
c)		 2.50
3.80		 Renaming error. Does not rename dollar as 100 cents and adjust.