Add and Subtract 2-Digit Numbers

Front

What is the sum of 23 and 15?

Back

38

Front

What is the result of subtracting 29 from 59?

Back

30

Front

What do you get when you subtract 21 from 83?

Back

62

Front

What is the difference when you subtract 12 from 43?

Back

31

Front

What is the process of adding two numbers called?

Back

Addition

Front

What is the process of finding the difference between two numbers called?

Back

Subtraction

Front

If you add 10 to a two-digit number, what will happen to the tens place?

Back

It may increase by 1 if the sum exceeds 99.

Front

What is the value of the tens place in the number 83?

Back

8

Front

How do you check your addition for accuracy?

Back

You can use the inverse operation of subtraction.

Front

What is the value of the ones place in the number 59?

Back

9