My Word Cards
Complete each definition. Extend learning by writing your own definitions.
The ______ states that addends can be regrouped and the sum remains the same.
The ______ states that numbers can be added in any order and the sum remains the same.
Counting on from the lesser number to the greater number to find the difference of two numbers is known as ______.
The ______ states the sum of any number and zero is that number.
A symbol or letter that stands for a number is a ______.
Choosing numbers close to the numbers in a problem to make the computation easier, and then adjusting the answer for the numbers chosen is called ______.
Operations that can undo each other are ______.
An ______ is a set of steps used to solve a math problem.