Addition & Subtraction Practice

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 an estimated sum?

Back

An estimated sum is a rough calculation of the total, often rounded to make mental math easier.

Front

What is the difference between two numbers?

Back

The difference is the result of subtracting one number from another.

Front

How do you estimate the sum of 5,323 + 2,611?

Back

Round 5,323 to 5,000 and 2,611 to 3,000, then add: 5,000 + 3,000 = 8,000.

Front

What is the correct difference for 82,376 - 47,294?

Back

The correct difference is 35,082.

Front

What is the correct difference for 936 - 218?

Back

The correct difference is 718.

Front

What is the difference of 60,000 - 38,243?

Back

The difference is 21,757.

Front

How do you estimate the difference of 485,635 - 231,957?

Back

Round 485,635 to 500,000 and 231,957 to 200,000, then subtract: 500,000 - 200,000 = 300,000.

Front

What is the term for the result of addition?

Back

The result of addition is called the sum.