Learn while you play

Short number drills, calculators that show their working, and word lists. Dip in whenever you like. It is all for fun.

Calculators

Percentages, ratios, interest, fractions, GCD and LCM, statistics, quadratics, number to words and more, with the working shown.

Quizzes and flashcards for useful, interesting words, with original definitions and examples.

Percent and percent change · Successive percent changes

Ratios and sharing

Simple and compound interest

Work and rate problems

Speed, distance and time

Remainders, units digits and factors · Primes and prime factors

Exponents and radicals · Linear equations and systems · Quadratics and factoring

Some people use these drills as a light warm-up for standardised tests. These pages say what is and is not covered.

Graduate school entrance exam: quantitative, verbal and writing skills.

Business school entrance exam: quantitative, verbal and data insights.

College entrance exam: reading, writing and math.

English proficiency test for study abroad.

A practice aid only: no promise about any exam score. All questions are original, and Wittlo is not affiliated with the exam organisations.