Adding and Subtracting Whole 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

How do you find the difference between two numbers?

Back

To find the difference, subtract the smaller number from the larger number.

Front

What is the sum of 1,249 and 1,355?

Back

The sum is 2,604.

Front

If a duck weighs 2,300 grams and a chicken weighs 1,675 grams, how much heavier is the duck?

Back

The duck is 575 grams heavier than the chicken.

Front

What is the diameter of Jupiter?

Back

The diameter of Jupiter is 88,846 miles.

Front

What is the diameter of Saturn?

Back

The diameter of Saturn is 74,898 miles.

Front

How do you estimate the difference between two numbers?

Back

Round the numbers to the nearest hundred or thousand and then subtract.

Front

What is the estimated difference in employees from 436 to 594?

Back

The estimated difference is about 200 employees.

Front

If Hamburger Hut gave away 65,343 packages of ketchup, how many packages of mustard did they give away if it was 978 fewer?

Back

They gave away 64,365 packages of mustard.