Decimal Operations

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 representation of 1/2.

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 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 9.08 + 14.6?

Back

23.68

Front

What is the result of 3.7 - 1.24?

Back

2.46

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 0.65 × 1.2?

Back

0.78

Front

What is the result of 21.56 - 9.56?

Back

12

Front

What is the place value of 5 in 3.45?

Back

The place value of 5 in 3.45 is 'five hundredths' or 0.05.