Multiplying 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 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 product of 5.78 and 3.5?

Back

20.23

Front

If one banana costs $3.00, how much do 80 bananas cost?

Back

$240

Front

What is 81.9 multiplied by 0.5?

Back

40.95

Front

If peaches cost $2.50 per pound and you buy 3 pounds, how much do you spend?

Back

$7.50

Front

What is 15.9 multiplied by 0.8?

Back

12.72

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting its value to make it simpler while keeping it close to the original value, often to a certain number of decimal places.

Front

What is the importance of the decimal point in multiplication?

Back

The decimal point indicates the value of the digits in a number, and its placement affects the overall value of the product.

Front

How do you check your work after multiplying decimals?

Back

You can check your work by estimating the product and ensuring your answer is reasonable based on the numbers you multiplied.