Adding and Subtracting 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 the sum of 4357 and 621?

Back

4978

Front

What is the difference when you subtract 307 from 5367?

Back

5060

Front

How do you round 1,245 to the nearest hundred?

Back

1,245 rounded to the nearest hundred is 1,200.

Front

If Ford has 567 glass marbles and 267 plastic marbles, how many marbles does he have before giving any away?

Back

834 marbles.

Front

What is the total number of marbles Ford has after giving away 132 plastic marbles?

Back

702 marbles.

Front

What is the sum of 4224 and 501?

Back

4725

Front

What is an estimate?

Back

An estimate is a rough calculation of the value, number, quantity, or extent of something.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to a nearby specified value, often to make calculations easier.