Decimals: Addition, Subtraction, Multiplication & Division

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. For example, 3.14 is a decimal.

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 numbers and place the decimal point in the product accordingly.

Front

What is the rule 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 to the right and divide as usual.

Front

What is the combined length of 3.758 cm and 37.4 cm?

Back

41.158 cm

Front

If Mary drives 5.36 miles each day, how far will she drive in 5 days?

Back

26.8 miles

Front

What is the total cost of 3 club sandwiches at $5.79 each?

Back

$17.37

Front

What is the total cost of a book that costs $13.78 and another that costs $24.49?

Back

$38.27

Front

What is the difference between the times 53.47 seconds and 53.74 seconds?

Back

0.27 seconds