Adding and Subtracting Decimals

Front

What is the process of adding decimals?

Back

To add decimals, align the numbers by their decimal points and add each column starting from the right, carrying over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by their decimal points and subtract each column starting from the right, borrowing if necessary.

Front

What is the standard form of a decimal number?

Back

The standard form of a decimal number is a way of writing the number using digits, where the decimal point separates the whole number part from the fractional part.

Front

Convert six and eighty-four thousandths into standard form.

Back

6.084

Front

What is the sum of 34 and 2.5?

Back

The sum of 34 and 2.5 is 36.5.

Front

How do you find the sum of two decimal numbers?

Back

To find the sum, align the decimal points, add the numbers column by column, and place the decimal point in the result directly below the decimal points of the numbers being added.

Front

What is the expanded form of a decimal number?

Back

The expanded form of a decimal number expresses the number as the sum of each digit multiplied by its place value.

Front

What is the expanded form of 96.47?

Back

(9 x 10) + (6 x 1) + (4 x 0.1) + (7 x 0.01) or (9 x 10) + (6 x 1) + (4/10) + (7/100).

Front

If a computer programmer has two files totaling 93 gigabytes and one file is 50.30 gigabytes, how do you find the size of the second file?

Back

Subtract the size of the first file from the total size: 93 - 50.30 = 42.7 gigabytes.

Front

What is the importance of aligning decimal points when adding or subtracting?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.