Adding and Subtracting 2 Digit Numbers

Front

What is 28 + 70?

Back

98

Front

What is 97 - 86?

Back

11

Front

What is 93 - 27?

Back

66

Front

What is 50 + 25?

Back

75

Front

What is 23 + 48?

Back

71

Front

What do we call the result of adding two numbers?

Back

Sum

Front

What do we call the result of subtracting one number from another?

Back

Difference

Front

If you add 10 to a number, what happens to that number?

Back

It increases by 10.

Front

If you subtract 10 from a number, what happens to that number?

Back

It decreases by 10.

Front

What is the first step in solving 50 + 25?

Back

Add the tens and then the ones.