Decimal Operations

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten, represented with a decimal point.

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 result of 8.5 ⋅ 2.3?

Back

19.55

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Front

What is the result of 3.52 + 7.01?

Back

10.53

Front

What is the result of 0.65 × 1.2?

Back

0.78

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 result of 23.2 + 5.9?

Back

29.10

Front

What is the result of 52 ⋅ 31?

Back

1,612

Front

What is the importance of the decimal point?

Back

The decimal point separates the whole number part from the fractional part of a decimal number, indicating the value of each digit.