1st Grade Math

Fundamental mathematics concepts for first grade students including basic arithmetic, counting, and number sense.

Counting and Number SenseBasic AdditionBasic SubtractionUnderstanding Place Value
Addition and Subtraction Word ProblemsCounting by Groups (Skip Counting)Understanding Patterns
Math in the Grocery StoreMath at HomeMath on the Playground
Using Visual AidsChecking Your Work
Counting and Number ...Basic AdditionBasic SubtractionUnderstanding Place ...Addition and Subtrac...Counting by Groups (...Understanding Patter...Math in the Grocery ...Math at HomeMath on the Playgrou...Using Visual AidsChecking Your Work
Study Strategies

Checking Your Work

Make Sure Your Answers Are Correct

After solving a math problem, it's a good idea to check your work. This helps catch mistakes and makes you a better math student!

How to Check Your Work

  • Count your answer again.
  • Use the opposite operation (add if you subtracted, subtract if you added).
  • Ask a friend or adult to look with you.

Checking helps you feel proud of your work and learn from any errors.

Examples

  • Counting your answer twice to make sure it's right.

  • Using subtraction to check an addition problem, like checking 3 + 2 = 5 by doing 5 - 2 = 3.