Adding Two-Digit Numbers

Addition is the process of finding the total or sum by combining two or more numbers.

The plus sign (+) means to add numbers together.

A two-digit number is a number that has two places, like 34 or 78.

To add two-digit numbers, you can add the tens first and then the ones.

A sum is the result of adding two or more numbers together.

A number line is a straight line with numbers placed at equal intervals, used to represent numbers visually.

A hundreds chart is a grid that shows numbers from 1 to 100, helping to visualize addition and patterns.

The first step is to add the tens: 30 + 30 = 60.

46 + 22 = 68.

35 + 44 = 79.