Add and Subtract Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (decimal point) separating 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

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the value of 0.9 in relation to 1?

Back

0.9 is less than 1; it represents nine-tenths of a whole.

Front

What is the result of adding 0.9 to 103.9?

Back

The result is 104.8.

Front

What is the result of subtracting 9.36 from 104.8?

Back

The result is 95.44.

Front

What is the result of subtracting 5.74 from 43.9?

Back

The result is 38.16.

Front

What is the result of adding 34 to 38.16?

Back

The result is 72.16.

Front

What is the result of adding 8.95 to 75?

Back

The result is 83.95.

Front

What is the result of subtracting 19.88 from 83.95?

Back

The result is 64.07.