Learn about ratios, proportions, percentages, coordinates, and change. Choose a tutorial now, with matching interactive practice activities added over time.
Start with a clear explanation or browse the complete video collection for this subject.
Learn how to calculate percent of change by comparing the original value and the new value. This tutorial walks through percent increase and percent decrease using real-life examples.
This tutorial shows how to calculate the whole amount when given the percent and the part. You’ll learn the formula and how to apply it step by step with visual support.
Learn how to calculate the total amount when given a part and a fraction of the whole. This method is essential in proportional reasoning and everyday problem solving.
Develop confidence with equivalent fractions and proportional reasoning through interactive practice.
Use a calculator to find interest, principal, annual interest rates, and time. Includes occasional advanced savings questions.
Find new amounts after percentage changes: no-calculator Foundation, then calculator-allowed Core and Challenge with rounding.
Convert fractions to decimal numbers and percentages using a calculator. Practice difficult ratios, meaningful rounding and real-world quantities.
Calculate a percent of an amount, from familiar percentages to large and decimal amounts. Calculator recommended.
Calculate a fraction of a quantity without a calculator, including mixed numbers and simplifying fractions in Challenge.
Find a whole from a known fraction and part with progressively harder fraction questions.
Find the total amount when a percent and the corresponding part are known, progressing from benchmark percents to harder decimal percents and larger values.
Calculate percentage increase and decrease with separate No Calculator, Calculator, and Mixed practice across Foundation, Core, and Challenge.
Calculate real or diagram distances from a scale, progressing from same-unit questions to unit conversions, maps, plans, and decimal scales.
Convert seconds, minutes, hours, days, weeks, months, and years through direct, multi-step, mixed-unit, and exact decimal questions.
Practice finding speed, distance, or time with direct calculations, unit conversions, and multi-step problems.
Convert percents to decimals and simplified fractions through three progressive difficulty modes.
Convert decimals to simplified fractions and percents through three progressive difficulty modes.
Arrange fractions from least to greatest, progressing from controlled proper fractions to mixed, improper, and negative values.
Convert fractions to decimals, percents, or a balanced mix through three progressive difficulty modes.
Reduce proper and improper fractions completely using common factors in three progressive modes.
