adding and subtracting three and two digit numbers

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 a two-digit number?

Back

A two-digit number is a number that has two places, ranging from 10 to 99.

Front

What is a three-digit number?

Back

A three-digit number is a number that has three places, ranging from 100 to 999.

Front

What is the sum of 78 and 12?

Back

90

Front

What is the sum of 62, 13, 74, and 35?

Back

184

Front

What is 630 minus 319?

Back

311

Front

What is the sum of 456 and 237?

Back

693

Front

How do you check your addition?

Back

You can check your addition by using subtraction. If you add two numbers and then subtract one of them from the sum, you should get the other number.

Front

What is regrouping in addition?

Back

Regrouping is the process of carrying over a value to the next place value when the sum of a column exceeds 9.