The Associative Property of Addition is a useful tool when you're adding multiple numbers together! Follow along with this tutorial to learn about this property and see how to use it.

The natural numbers are also called the counting numbers. The whole numbers are almost exactly as the natural numbers the same except for one small difference! Watch this tutorial and learn the difference between natural and whole numbers.

Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.

You can't simplify an expression without fully understanding the order of operation! Follow along with this tutorial to see how to use the order of operations to simplify an expression.

Further Exploration

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

When you're adding numbers together, does their order matter? This tutorial can answer that question! It looks at the Commutative Property of Addition!