Decimals Review

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

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 answer directly below the other decimal points.

Front

What is rounding?

Back

Rounding is the process of adjusting the value of a number to make it simpler and easier to work with, often to the nearest whole number or specified decimal place.

Front

How do you round a number to the ones place?

Back

To round to the ones place, look at the digit in the tenths place. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the value of a digit in a decimal?

Back

The value of a digit in a decimal depends on its position. For example, in 78.25, the 5 is in the hundredths place, so its value is 0.05.

Front

How do you round a number to the tenths place?

Back

To round to the tenths place, look at the digit in the hundredths place. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is multiplication of decimals?

Back

Multiplication of decimals involves multiplying the numbers as if they were whole numbers, then placing the decimal point in the product based on the total number of decimal places in the factors.

Front

What is the product of 2 and 0.04?

Back

The product of 2 and 0.04 is 0.08.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator. For example, 1/4 = 0.25.

Front

What is the decimal equivalent of 3/10?

Back

The decimal equivalent of 3/10 is 0.3.