Common Core: 1st Grade Math

This subject covers foundational math concepts for first graders, including addition, subtraction, and basic number sense.

Basic Concepts

Addition Basics

Putting Things Together

Addition means joining groups of things to find out how many there are altogether.

What Does Addition Look Like?

If you have 2 apples and get 3 more apples, how many apples do you have?
You can write this as: \(2 + 3 = 5\)

Addition Symbols

The plus sign \((+)\) means put together, and the equals sign \((=)\) shows the answer.

Fun Ways to Add

You can use your fingers, count objects, or even draw pictures to help you add.

Addition in Real Life

When you play with friends, you might add your toys together to see how many you all have.

Examples

  • Adding 3 toy cars and 2 more to see you have 5 cars.

  • Finding out how many candies you have after getting some from a friend.

In a Nutshell

Addition means putting groups together to find out how many there are in total.

Key Terms

Addition
Joining two or more groups to find the total.
Plus Sign
The symbol ‘+’ shows addition.
Equals Sign
The symbol ‘=’ shows the answer.