Decimal Operations

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate 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

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing 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

How do you divide decimals?

Back

To divide decimals, move the decimal point in the divisor to make it a whole number, and move the decimal point in the dividend the same number of places. Then divide as you would with whole numbers.

Front

What is the result of 14.4 gallons of gas bought weekly for 6 weeks?

Back

86.4 gallons.

Front

What is 8.5 multiplied by 2.3?

Back

19.55.

Front

What is 3.7 minus 1.24?

Back

2.46.

Front

What is 21.56 minus 9.56?

Back

12.

Front

What is 0.65 multiplied by 1.2?

Back

0.78.