Adding and Subtracting within 100

Front

What is addition?

Back

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

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What does the plus sign (+) mean?

Back

The plus sign means to add numbers together.

Front

What does the minus sign (-) mean?

Back

The minus sign means to subtract one number from another.

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals, used to represent numbers and perform operations like addition and subtraction.

Front

How do you add numbers on a number line?

Back

To add, start at the first number and move to the right by the number of steps indicated by the second number.

Front

How do you subtract numbers on a number line?

Back

To subtract, start at the first number and move to the left by the number of steps indicated by the second number.

Front

What is 25 + 4?

Back

29

Front

What is 54 - 22?

Back

32

Front

What is 56 + 22?

Back

78