Addition and Subtraction Problem Solving

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 weights?

Back

To find the difference between two weights, subtract the lighter weight from the heavier weight.

Front

If you have 2000 dollars and you collect 1455 dollars, how do you find out how much more you need?

Back

Subtract the amount collected (1455) from the total needed (2000): 2000 - 1455 = 545.

Front

What is the formula for finding how much something has grown?

Back

To find how much something has grown, subtract the original size from the new size.

Front

If a puppy weighs 8 lbs at birth and 92 lbs as an adult, how do you calculate its growth?

Back

Subtract the birth weight (8 lbs) from the adult weight (92 lbs): 92 - 8 = 84 lbs.

Front

What does it mean to give something away in terms of subtraction?

Back

Giving something away means you are subtracting that amount from what you originally had.

Front

How do you calculate temperature change?

Back

To calculate temperature change, subtract the final temperature from the initial temperature.

Front

What is the result of 173 - 86?

Back

The result is 87.

Front

If the temperature was 50 degrees and dropped to 30 degrees, what is the temperature change?

Back

The temperature change is 20 degrees.