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

If I have 10 apples and I buy 5 more, how many apples do I have?

Back

15 apples.

Front

What is the sum of 25 and 4?

Back

29.

Front

If there are 10 cats and 8 more join them, how many cats are there in total?

Back

18 cats.

Front

How do you subtract 5 from 15 on a number line?

Back

Count back 5 steps from 15.

Front

What is 56 + 22?

Back

78.

Front

What is the total of 12 cookies and 42 cookies?

Back

54 cookies.