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Flat illustration on a deep purple background of an adult holding a shopping bag and a phone calculator, next to an abstract pie chart and a large percent-like shape.
Classroom Notes· 7 min read

How to calculate percentages: three formulas and the mental shortcuts

Every percentage question is one of three calculations. Here are the three formulas with a worked example each, the 10% trick for doing them in your head, and the mistakes that make a sale price or a news headline come out wrong.

By Laura Bennett, MathIt
Flat illustration on a deep purple background of a parent and child at a kitchen table, working through a stacked division problem on paper drawn as abstract shapes.
Classroom Notes· 8 min read

How to teach long division, with worked examples

The four steps of long division, three fully worked examples, the partial quotients method many schools teach first, and the mistakes that cost the most marks.

By Laura Bennett, MathIt
A pencil working through a multi-step arithmetic expression with brackets on squared paper, one line per step.
Classroom Notes· 8 min read

The order of operations, worked out step by step

One rule, several acronyms, and one detail almost everyone gets wrong. Five worked examples from a single multiplication up to nested brackets with an exponent, plus an honest answer to the viral equations.

By Laura Bennett, MathIt