Micro math practice
Every calculation the Micro exam asks for, with new numbers every time. Type the answer rather than picking from four options — producing a number is a different skill from eliminating three wrong ones, and only one of them is what the exam scores.
Price elasticity of demand
Report the absolute value and compare it with 1. Above 1 is elastic, so a price rise cuts total revenue; below 1 is inelastic, so a price rise raises it.
When price rises from $18.5 to $25.9, quantity demanded changes from 399 to 489. Calculate the price elasticity of demand as an absolute value.
Every skill in this set
- Price elasticity of demandSupply & Demand
- PED = %ΔQd / %ΔP
- Report the absolute value and compare it with 1. Above 1 is elastic, so a price rise cuts total revenue; below 1 is inelastic, so a price rise raises it.
- Marginal and average cost from a tableProduction, Cost & Perfect Competition
- MC = ΔTC / ΔQ · ATC = TC / Q
- Marginal is a difference between rows; average is a division within a row. Differencing an average or dividing a change is the standard error, and both produce believable numbers.
- Marginal revenue productFactor Markets
- MRP = MP × P (competitive product market)
- Hire while MRP exceeds the wage, and stop where they are equal. That is the factor-market version of MR = MC and it decides every labor-demand question.
Common questions
What math is on the AP Microeconomics exam?
3 distinct calculations: price elasticity of demand, marginal and average cost from a table, marginal revenue product. Each one appears on the exam's formula sheet or is assumed by it, so the work is applying the relationship rather than recalling it.
Do the problems repeat?
No. Every problem is generated with fresh numbers, so the same skill can be practiced indefinitely without memorizing an answer. That is the whole point — being able to run a procedure on numbers you have not seen is what the exam actually tests.
How precise does my answer need to be?
Answers are accepted within about 1–3% of the exact value, which allows for rounding at intermediate steps the way a calculator does. Units are optional — type the number and the unit if you like, or just the number.