Buying bikes

Buying bikes

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 the discount percentages of amounts of money.

Te Ariki, Ani, and Tafata want to buy new bikes.
The bike shop in town has a sale advertisement in their window for each bike.

Read each advertisement and answer the questions to show how much money could be saved when buying the bikes in the sale.

Question 1Change answer

25 percentage saving of a 400 dollar bike

How much money will Te Ariki save if he buys this bike? $

Question 1Change answer

20% saving on 250 dollars

How much money will Ani save if she buys this bike? $

Question 1Change answer

30 percent of 300

How much money will Tafata save if she buys this bike? $

Question 1Change answer

15 percent of 700

How much money will be saved if one of the children buys this bike? $

Task administration: 
This task can be completed with pencil and paper or online (with auto marking displayed to students).
Level:
4
Curriculum info: 
Maths, Number and Algebra, Number Strategies
Keywords: 
percentages, discount, money, spending
Description of task: 
Students calculate the amount of money saved from given percentage discounts on bikes.
Curriculum Links: 
This resource can help to identify students' ability to apply additive or multiplicative strategies flexibly with  decimals and percentages.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Multiplicative thinking, sets 6-7
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y8 (05/2003)

a)

$100 (Reduced price - $300)

moderate

b)

$50 (Reduced price - $200)

moderate

c)

$90 (Reduced price - $210)

difficult

d)

$105 (Reduced price - $595)

difficult

NOTE: Accept as correct if students' responses give the reduced price of each bike.

Diagnostic and formative information: 
  

Common Error

b)

$63

c)

$100