Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (.) to separate the whole number 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 of 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 difference directly below the other decimal points.

Front

What does the term 'sum' mean?

Back

The sum is the result of adding two or more numbers together.

Front

What does the term 'difference' mean?

Back

The difference is the result of subtracting one number from another.

Front

How do you round a decimal to the nearest whole number?

Back

To round a decimal to the nearest whole number, look at the digit to the right of the decimal point. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the value of 0.5 in fraction form?

Back

0.5 is equivalent to 1/2.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator (top number) by the denominator (bottom number).

Front

What is the divisor in a division problem?

Back

The divisor is the number by which another number (the dividend) is divided.

Front

What is the dividend in a division problem?

Back

The dividend is the number that is being divided by another number (the divisor).