Life skills · Grades 6–10
Budget arithmetic and opportunity cost · Revision card
A simple budget compares available money with planned costs.
Understand the idea
Balance the amounts
A simple budget compares available money with planned costs.
Separate categories
One-off costs and recurring costs affect plans differently.
A choice excludes alternatives
Opportunity cost concerns the next-best option given up.
Worked examples
A fictional club has 120 units and spends 35 on materials and 28 on transport. How much remains?
120 − 35 − 28 = 57.
57
Which is a recurring cost in a monthly plan?
The fee repeats each month.
a monthly room fee
Explain without looking
- A project has 200 units. A 10% contingency is reserved. How many units are reserved?
Preview material · independent educational review required. Grade bands are approximate, not official curriculum alignment.