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 finding the difference between two numbers by taking one number away from another.

Front

What is the sum of 25 and 15?

Back

40

Front

What is the difference between 50 and 20?

Back

30

Front

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

Back

15 apples

Front

What is 30 + 20?

Back

50

Front

What is 70 - 30?

Back

40

Front

If there are 12 birds in a tree and 4 fly away, how many are left?

Back

8 birds

Front

What is the sum of 8 and 7?

Back

15

Front

What is the difference between 90 and 45?

Back

45