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 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 sum directly below the other decimal points.

Front

What is the result of 3.45 x 1.2?

Back

4.14

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 sum of 55.78 and 4.6?

Back

60.38

Front

What is the process for subtracting decimals?

Back

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 is the result of 1.625 + 0.3 + 0.61?

Back

2.535

Front

How do you divide decimals?

Back

To divide decimals, move the decimal point in the divisor to the right to make it a whole number, and move the decimal point in the dividend the same number of places. Then divide as usual.

Front

What is the result of 5.3 x 3.5?

Back

18.55

Front

If Mr. Weinheimer has $20.08 and buys donuts for $8.72, how much does he have left?

Back

$11.36