Add, Subtract, Multiply & Divide Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

What is the process for subtracting decimals?

Back

To subtract decimals, align the numbers by the decimal point, subtract as you would whole numbers, and place the decimal point in the difference directly below the other decimal points.

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both factors and place the decimal point in the product accordingly.

Front

What is the method for dividing decimals?

Back

To divide decimals, move the decimal point in the divisor to the right until it is a whole number, then move the decimal point in the dividend the same number of places and divide as usual.

Front

What is the total amount of rain if Malcolm measured 2.75 inches on Saturday and 1.6 inches on Sunday?

Back

4.35 inches.

Front

If Mrs. Dombrowsky spent $67.50 on 27 books, how much did one book cost?

Back

$2.50.

Front

What is the average weight of each ball if Shawn bought 5 balls weighing a total of 1.8 pounds?

Back

0.36 pounds.

Front

How much dry cement does Salvador have left after using 1.7 pounds from 3.25 pounds?

Back

1.55 pounds.

Front

How much did Jackie earn this week if she worked 7.5 hours at $8.95 per hour?

Back

$67.125.