Life skills · Grades 5–9
Plan a budget with stated assumptions
Separate available money, planned costs and a reserve.
Learn the idea
Budget
A plan compares expected income or allowance with spending and saving.
Reserve
Leaving a reserve can account for uncertainty in costs.
Unit price
Compare matching quantities when evaluating stated prices.
Scope
These are fictional arithmetic scenarios, not current prices or financial advice.
Worked examples
A fictional activity has 80 units available and costs 25, 18 and 12 units. How much remains?
80 − 25 − 18 − 12 = 25.
25
A pack of 6 identical items costs 12 units. Find cost per item.
12/6 = 2 units per item.
2
Check your understanding
Which comparison is fairer?
- Price per matching unit or quantity.
- Only comparing package colors.
- Assuming every bigger package is cheaper.
Reserve 10% of a 150-unit budget. How much is reserved?
Why should a budget show assumptions?
Answers and marking notes
Answers and marking notes
- Price per matching unit or quantity.
Comparable units support the comparison.
- 15
0.10 × 150 = 15.
- Costs and available amounts can change, and readers need to know the basis.
A plan is not a guarantee.
Independent educational review required. Grade bands are approximate; these are not officially aligned curricula.