Does this help with sale prices?

This quiz asks what a percentage of a number is. For a sale price, take that amount off the original price.

Is there a time limit?

No. Work through the ten questions at your own pace and review your misses at the end.

Do I get the same questions every time?

Every round is generated fresh. Only a friend's challenge link gives you the same questions in the same order.

💯 Percent Mental Math

What's 25% of 240? No calculator

It starts with easy ones like 10%, 50% and 25%, then moves to 15%, 75% and 12%. Know the shortcuts (10% is divide by ten, 50% is half, 25% is a quarter) and you'll beat the calculator. Every miss shows you the working.

About this quiz

Percentages are everywhere: discounts, test scores, battery levels. Being able to estimate them in your head before reaching for a calculator makes life easier.

Every question comes out to a whole number. The wrong options are what you get by adding or dropping a zero, so a rough estimate already rules many of them out.

Questions: 10
Subject: Math
Price: Free
Sign-in: Optional
Devices: Phone, tablet, desktop

How to play

10% means shift one place: 10% of 240 is 24: dividing by ten is like dropping a zero. 5% is half of that, 20% is double.
Turn 50%, 25%, 75% into fractions: 50% is half, 25% is a quarter and 75% is three quarters. As fractions, one division does the job.
Review only what you missed: Under your result you'll find each question you missed, what you picked, the right answer and the working. Finish a round and your review is done too.

Score ranks

Sale Math Legend
All correct. Your friends will want you with them at every sale.
Receipt Checker
Nearly perfect. Just watch the awkward ones like 15% and 12%.
Can Handle Pocket Money
The easy ones are locked in. Remember one shortcut each and you'll improve fast.
Reaching for the Calculator
No problem. Start with 10%, then half, then a quarter.

Frequently asked questions

Does this help with sale prices?: This quiz asks what a percentage of a number is. For a sale price, take that amount off the original price.
Is there a time limit?: No. Work through the ten questions at your own pace and review your misses at the end.
Do I get the same questions every time?: Every round is generated fresh. Only a friend's challenge link gives you the same questions in the same order.