Approach: Independent |
Resources:
None |
Questions / instructions:
A shop is selling things at bargain
prices. Write down how much is taken off the old price.
Then write down the new bargain price.
Example:
|
10% off
$2
|
Savings:
New Price |
20¢
$1.80 |
|
|
%
responses |
y8
|
1. 10% off
$5 - Teacup
|
Savings:
New Price |
50¢
correct, given above
|
57
85
|
2. 10% off
$2.50 - Softball
|
Savings:
New Price |
25¢
correct, given above
|
48
83
|
3. 50% off
$25 - Softball Glove
|
Savings:
New Price |
$12.50
correct, given above
|
58
74
|
4. 50% off
$199
- Camera
|
Savings:
New Price |
$99.50
correct, given above
|
34
50
|
5. 25% off
$399 - Television |
Savings:
New Price |
$99.75
correct, given above
|
13
37
|
6. 12.5% off
$40 - Rugby
Ball |
Savings:
New Price |
$5.00
correct, given above
|
18
40
|
Commentary:
Year 8 students struggled to calculate the value of discounts, averaging just
38 percent correct. They were more successful at subtracting their calculated
discount from the list price, averaging 62 percent correct. |