Arithmetic Guides
Arithmetic is the foundation of all mathematics. These guides cover the essential skills you need for everyday math — from working with fractions and decimals to understanding percentages, ratios, and the order of operations.
Each guide includes clear explanations, step-by-step worked examples, and tips to help you build confidence. Whether you're reviewing for a test or learning these concepts for the first time, start with any topic below.
Fractions
Step-by-step guide to adding, subtracting, multiplying, and dividing fractions.
Decimals
Learn how to add, subtract, multiply, and divide decimals with worked examples.
Percentages
Learn to calculate percentages, percentage change, and convert between fractions and percentages.
Conversions
Convert between fractions, decimals, and percentages with step-by-step methods and a reference table.
Ratios & Proportions
Understand ratios, simplify them, and solve proportions using cross-multiplication.
Order of Operations
Master PEMDAS with step-by-step examples for parentheses, exponents, multiplication, division, addition, and subtraction.