Math Guides and How-To Articles
Guides & How-To Articles
Clear, step-by-step explanations of common math methods — each guide is paired with a free calculator so students can learn the method and check their work.
How to Do Box Method Multiplication (Area Model)
Split numbers by place value, multiply in a grid, and add the parts — with a worked example. Grades 3–5.
How to Do Long Division, Step by Step
The divide, multiply, subtract, bring down method explained, including remainders and how to check your answer. Grades 4–6.
Addition & Subtraction With Regrouping
Carrying and borrowing made simple, with clear examples and common mistakes to avoid. Grades 1–4.
How to Do Box Method Division
Set up the boxes, then divide, multiply and subtract in each one — with a worked example and remainders. Grades 4–6.
How to Do Partial Quotients Division
The chunking method explained: subtract friendly multiples, add the partial quotients, and find the remainder. Grades 4–6.
How to Understand Place Value
Standard, word and expanded form, plus what each digit is worth and why zero is a placeholder. Grades 2–5.
How to Do Order of Operations (PEMDAS)
Work through brackets, exponents, multiply/divide, then add/subtract — including the left-to-right rule. Grades 5–7.
How to Round Numbers
Find the rounding place, check the decider digit, and round up or down — for whole numbers and decimals. Grades 3–6.
How to Do Percentages
The three main percentage questions — percent of a number, what percent, and percentage change — each with a worked example. Grades 5–7.
How to Do Fractions
Add, subtract, multiply, divide and simplify fractions, plus mixed numbers and comparing — each with a worked example. Grades 3–6.
How to Do Decimals
Add, subtract, multiply and divide decimals, plus converting a decimal to a fraction and a percent — with worked examples. Grades 4–6.
How to Do Integers
The sign rules for adding, subtracting, multiplying and dividing positive and negative numbers — with a number line and worked examples. Grades 6–8.
New guides are added regularly — check back soon.
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