1st Grade Math
Fundamental mathematics concepts for first grade students including basic arithmetic, counting, and number sense.
Basic Addition
Putting Things Together
Addition means bringing groups together to find out how many there are in total. We use the plus sign (+) to show addition.
How Addition Works
If you have 2 red balls and get 3 more, you have 2 + 3 balls altogether. Addition tells you the new total.
Ways to Add
- Use fingers
- Draw dots or pictures
- Use number lines
Addition in Daily Life
We add things all the time, like when collecting stickers or sharing snacks with friends.
Addition Sentences
An addition sentence looks like this: \( 4 + 2 = 6 \). The numbers you add together are called addends, and the answer is the sum.
Real-World Connections
Addition helps you figure out how many toys you have after getting a new one, or how many candies you and a friend have together.
Key Formula
\[a + b = c\]
Examples
Adding 3 toy cars to 2 toy cars: 3 + 2 = 5.
Adding 1 apple to a basket of 4 apples: 1 + 4 = 5.
In a Nutshell
Addition means putting things together to make a bigger number.