Skill: percent-applications

Percent Applications Practice

An endless supply of never-repeating real-world percent problems with instant feedback. Discounts, sales tax, tips, percent change, successive percents, tax on sale, original prices, and simple interest.

1 Practice

Type your answer and press Check answer (or Enter). A wrong answer earns a hint first;
a second miss walks you through the full solution.

Score 0 · Streak 0 · Problem 0

Score counts first-try correct answers. Streak counts consecutive correct answers.

Discounts

How to enter answers

Money: type a dollar amount like 64.80 or 60 — the $ is optional.
Percents: type the plain number, like 30 for 30%.

2 What you’ll practice

Every problem is generated fresh from 12 templates — a problem never repeats until its whole pool is used up.

Discounts & tax

Sale prices, discount amounts, sales-tax amounts and totals — including tax on the sale price.

$80 jacket 25% off + 8% tax → $64.80

Tips & change

Tip amounts and bill totals, percent increase and decrease (always change ÷ original).

$50 → $65 → 30% increase

Tricky combos

Successive percents, finding the original price, and simple interest.

$60 +25% −20% → $60

3 Watch out for these

The three traps from the lesson, in one place.

1. Dividing by the new value

Wrong: $50 → $65: 15/65 ≈ 23%
Right: 15/50 = 30%. The original is the denominator.

2. Taxing the original price

Wrong: 8% tax on the $80 tag = $6.40
Right: 8% on the $60 sale price = $4.80.

3. “30% off, then 30% back on”

Wrong: $100 → $70 → $100
Right: $100 → $70 → $91. Percents don’t undo.

Review the lesson
Open the calculators
Print a worksheet