Teaching · Budgeting
Fixed vs. Variable Expenses Sorting Cards
A fixed expense costs the same amount every time — rent, a car payment, a phone plan. A variable expense costs a different amount every time — groceries, gas, a night out. And some bills arrive every single month but never cost the same twice. 48 picture cards, three mats, and anchor charts that teach the one idea students most often get wrong: this is about the amount, not about the thing you buy.
How It Works
Two questions, one pile of cards
Students read a card and ask two questions: Do I already know the number? and Would it be different next time? Rent is the same every month, so it is fixed. Groceries change every trip, so they are variable. And the electric bill comes every month but jumps in summer — those are the ones worth arguing about. Print once on cardstock and it is a center you can reuse all year.
Sort fixed and variable
Start with two mats and the first 12 cards. Rent is fixed. Groceries are variable. Students place each card, then say how they know.
Add the “changes some months” mat
Now the tricky ones. The electric bill, the water bill, a phone bill that goes over on data — a bill every month, but never the same amount. Fixed means the amount is the same, not that you have to pay it.
Defend a card
Pairs pick two cards and argue them to another pair. The recording sheet and reflection prompts turn the sort into writing.
What’s Inside
Twenty pages, from card sort to answer key
- 48 picture sorting cards — 18 fixed, 18 variable, 12 that change some months. Eight per page with dashed cut lines.
- Three sorting mats — Fixed, Variable, and Changes Some Months, one full page each.
- Three anchor-chart posters — Fixed, Variable, and a side-by-side comparison.
- A student recording sheet — write-in columns plus a table for what makes the amount go up or down.
- A teacher answer & discussion key — every card with a reason, and a two-sided note on each “changes” card.
- A two-page teacher guide — objective, materials, how to use it, and how to differentiate grades 3 through 6.
- An extension page — find the same car across three piles, and prove that fixed does not mean boring.
- A low-ink version — the whole pack again in clean black and white.
Why These Cards
The same car shows up in three different piles
Here is the thing students get wrong, and most worksheets never catch: fixed versus variable is not about what you buy. It is about how the amount behaves. So the picture can never give away the answer — and this deck is built to prove it.
The car payment is fixed. The gas is variable. A repair is a variable surprise. Same car, three piles. The phone plan is fixed, a new case is variable, and going over on data changes the bill some months. A student who reaches for “there is a car, so it is fixed” is wrong three cards later — on purpose.
Two more habits get broken the same way. Fixed is not the “boring” pile: a streaming subscription and a gym membership are fun and still fixed. Variable is not the “fun” pile: groceries and medicine are needs and still variable. And students arriving from Needs vs. Wants learn the trap head-on — a gym membership is fixed and a want; groceries are variable and a need. The teacher key and the extension name all of these, because the argument is where the concept actually lands.
Get It
Try the free sample, or get the full pack
Free with a free account
Free 12-card sample
Twelve cards — four fixed, four variable, four that change some months — plus the Fixed and Variable mats and quick-start directions. A real mini-lesson on its own, not a teaser.
Included with paid membership
The complete pack
All 48 cards, the Changes Some Months mat, three anchor-chart posters, the recording sheet, the three-page answer key, and the extension — in full color and in low-ink.
Keep Going
What to teach before and after the sort
These cards are the hands-on way in. When students can sort without hesitating, move them on to the written work and a real monthly budget.
Fixed & Variable Expenses Worksheet
A generator for grades 6–12: students classify a list of expenses into two columns and total each. Make up to five versions with an answer key — the natural written follow-up once the sort is easy.
Fixed & Variable Expenses Lesson
The lesson that puts the two kinds of expense into a monthly budget and compares them against income. Sort with the cards first, then run the lesson.
Needs vs. Wants Sorting Cards
The companion card sort, and usually the one to teach first — then use these cards to show that fixed does not mean a need. Same format, same mats, same routine.
Budgeting Lessons & Worksheets
Where fixed and variable expenses sit in the bigger picture: making a budget, tracking spending, and saving toward a goal.
Questions
Before you print
What is the difference between a fixed and a variable expense?
What is the “changes some months” pile?
Why does the same object appear in more than one pile?
How is this different from the fixed and variable worksheet you already have?
What do I need to print?
Is the free sample actually usable?
Print it once, sort it all year
Cut the cards apart, put them in a center, and the difference between a fixed and a variable expense stops being a definition to memorize and becomes something students argue about with a card in their hand.