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Materials Required
Required
- Paper
- Pencil
- Calculator
Suggested materials
- Printed expense cards
- Budget worksheet
- Monthly calendar
Learn by Doing
Activity #004
How Much Money Does This Family Need This Month?
Money & Budgeting
How Much Money Does This Family Need This Month?
A family wants to know how much money they need for the month. Some expenses happen weekly, some happen biweekly, and some happen monthly. Convert each expense to a monthly amount, add the total by hand, test a change, and compare your work.
Check your work: IversusE Budget Planner
Learn by Doing
Predict
Gather Information
Calculate
Test
Compare
Reflect
Real-World Challenge
Set up
Materials
Use a simple set of expense cards and a clean place to show the monthly conversions.
1
Predict
Make a first estimate.
Before adding anything, decide whether the family will need more or less than a target amount.
Prediction question
Do you think this family needs more or less than $2,500 this month?
- What expenses do you expect to be largest?
- Which expenses happen most often?
- What makes your prediction feel reasonable?
2
Gather Information
Sort the expense cards by frequency.
Read each expense and identify whether it happens weekly, biweekly, or monthly.
Sample expenses
Monthly: rent $1,200, electricity $110, water $45, internet $80, phone $95, car payment $325.
Weekly: groceries $180, gas $60, allowance $20. Biweekly: lawn care $50.
3
Calculate by hand
Convert each expense to a monthly amount.
Expenses with different frequencies must be converted before they can be added.
Monthly conversions
Weekly expense × 52 ÷ 12 = average monthly expense
Biweekly expense × 26 ÷ 12 = average monthly expense
Monthly expenses = use as entered.
- Convert each weekly expense to an average monthly expense.
- Convert each biweekly expense to an average monthly expense.
- Copy each monthly expense into the monthly column.
- Add every monthly amount to find the total.
4
Test
Change one or two expenses.
Adjust the budget and observe how the monthly total changes.
- What happens if groceries increase from $180 weekly to $200 weekly?
- What happens if internet decreases from $80 monthly to $65 monthly?
- What happens if one optional subscription is cancelled?
- Does a weekly change affect the monthly total more than you expected?
5
Compare
Compare with the IversusE Budget Planner.
Use the app after the hand calculation to check and refine the monthly total.
Check your work
IversusE Budget Planner
Enter the same expenses and frequencies, then use the app result to check and refine your estimate.
- Compare your hand estimate and the IversusE result.
- Check whether each expense frequency was entered correctly.
- Explain any difference between your estimate and the app total.
6
Reflect
Think about the family budget.
Budgeting is not just adding numbers. It also helps people notice needs, wants, and patterns.
Reflection questions
- Which expense surprised you?
- Which expense occurs most often?
- Which expense costs the most each month?
- Which expenses are needs?
- Which expenses are wants?
7
Apply
Real-World Challenge
Create a simple monthly budget and explain how each expense was converted.
Build a simple monthly budget
Create a budget for a fictional family or, with a parent's permission, use a simplified version of your own household expenses. Convert each frequency before adding the monthly total.
Activity sheet
Activity Sheet #004: How Much Money Does This Family Need This Month?
Use the companion activity sheet page to plan the recording flow for prediction, expense frequency sorting, monthly conversions, test changes, app comparison, reflection, and Real-World Challenge.