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

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 result 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 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. Divide as usual.

Front

What is the difference between 20.00 and 16.87?

Back

The difference is 3.13.

Front

If you have $7.00 and spend $6.50, how much do you have left?

Back

You have $0.50 left.

Front

What is the total cost if you spend $15.28 on lemons and $8.93 on sugar?

Back

The total cost is $24.21.

Front

How do you find the remaining distance if you have run 2.93 miles of a 7.7-mile run?

Back

Subtract 2.93 from 7.7 to find the remaining distance: 7.7 - 2.93 = 4.77 miles.

Front

What is the sum of 14.7 and 4.6?

Back

The sum is 19.3.