Adding and Subtracting 3 Digits

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 it mean to have 'left' in a math problem?

Back

'Left' refers to the amount remaining after some has been taken away.

Front

If you have 462 baseball cards and sell 181, how do you find out how many you have left?

Back

You subtract 181 from 462.

Front

What is the sum of 243 and 139?

Back

The sum is 382.

Front

How do you find the total number of items when combining two groups?

Back

You add the number of items in each group together.

Front

What is the difference between 730 and 214?

Back

The difference is 516.

Front

If you have 225 marbles and a friend has 294, how many marbles do you have together?

Back

You add 225 and 294 to get 519.

Front

What is a three-digit number?

Back

A three-digit number is a number that has three places, such as 100 to 999.

Front

What does 'in all' mean in a math problem?

Back

'In all' means the total amount when combining two or more quantities.