- Definition
An algebraic expression is a math phrase that uses letters (called variables) and numbers, connected by operations like addition or subtraction, but it doesn't have an equals sign. Think of it like a sentence in math that describes a quantity, such as "twice a number plus five.
The expression x + 4 tells you to take a number, x, and add 4 to it.
How to teach this in 30 seconds
Try this analogy: An algebraic expression is like a recipe for a smoothie where one ingredient is a mystery fruit you'll choose later.
Ask your child: If the expression is 'c + 3,' what could the 'c' be if we're talking about cookies?
Common mix-up: Kids may think an algebraic expression has one final answer. It's a set of instructions whose result changes depending on the number the variable represents.
Examples
- The expression 2y means to multiply 2 by whatever number 'y' stands for.
- If 'a' is your age, 'a + 10' is an expression for how old you will be in ten years.
algebraic expression is a term used in Ontario’s Kindergarten to Grade 8 curriculum.
Where this shows up
The descriptions on this page are SmartStudy’s own original, plain-language writing — not the Ministry’s wording. They are aligned to the Ontario Curriculum, © King’s Printer for Ontario. For the Ministry’s official wording, see the source link below. SmartStudy is an independent service and is not affiliated with, endorsed by, or sponsored by the Government of Ontario or the Ministry of Education. Ontario Curriculum and Resources ↗
