Decimal Operations

Front

What is the result of dividing a decimal by another decimal?

Back

To divide a decimal by another decimal, you can convert both numbers to whole numbers by multiplying them by 10, 100, etc., depending on the number of decimal places. Then, perform the division as you would with whole numbers.

Front

How do you add two decimal numbers?

Back

To add two decimal numbers, align the numbers by their decimal points and add them as you would with whole numbers, carrying over if necessary.

Front

What is the process for subtracting decimal numbers?

Back

To subtract decimal numbers, align the numbers by their decimal points and subtract as you would with whole numbers, borrowing if necessary.

Front

What is the perimeter of a shape, and how is it calculated?

Back

The perimeter is the total distance around a shape. For a rectangle, it is calculated as P = 2(length + width). For a square, P = 4(side length). For other shapes, add the lengths of all sides.

Front

How do you find the length of an edge of a cube if you know the perimeter of one face?

Back

The perimeter of one face of a cube is equal to 4 times the length of one edge. To find the edge length, divide the perimeter by 4.

Front

What is the significance of decimal places in addition and subtraction?

Back

Decimal places indicate the precision of a number. When adding or subtracting, it is crucial to align decimal points to maintain accuracy.

Front

What is the result of 21.728 - 13.028?

Back

The result is 8.700.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal as a fraction with the decimal number as the numerator and a power of 10 as the denominator, then simplify if possible.

Front

What is the importance of rounding in decimal operations?

Back

Rounding is important in decimal operations to simplify numbers for easier calculations and to express results in a more manageable form.

Front

What is the result of 2.26 + 3.7?

Back

The result is 5.96.