Life skills · Grades 4–8
Unit prices and practical comparisons · Revision card
Use a unit price when package sizes differ.
Understand the idea
Compare equal quantities
Use a unit price when package sizes differ.
Include constraints
The cheapest per unit is not always usable within a budget or before waste occurs.
Use the stated prices
All prices here are fictional arithmetic examples with no tax unless stated.
Worked examples
A 600 g bag costs 3.60 units. Find its price per 100 g.
3.60/6 = 0.60.
0.6
Which has the lower price per item: 4 pencils for 2.00 units or 6 for 3.60 units?
The unit prices are 0.50 and 0.60.
4 pencils for 2.00 units
Explain without looking
- Which unit price is lower?
Preview material · independent educational review required. Grade bands are approximate, not official curriculum alignment.