5.1-5.4 Adding, Subtracting, and Multiplying 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, carrying over if necessary.

Front

What is the result of 5.66 + 4.25?

Back

9.91

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, borrowing if necessary.

Front

What is the result of 9.74 - 3.25?

Back

6.49

Front

What does multiplying decimals involve?

Back

Multiplying decimals involves multiplying the numbers as if they were whole numbers and then placing the decimal point in the product.

Front

What is 0.4 x 30?

Back

12

Front

How do you multiply a decimal by a whole number?

Back

Multiply the decimal by the whole number as if they were both whole numbers, then adjust the decimal point in the product.

Front

What is the result of 7.8 multiplied by 5?

Back

39.0

Front

What is the product of 3.5 and 4?

Back

14.0