Multiply Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (.) to separate the whole number from the fractional part.

Tags

CCSS.3.NF.A.3C

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.

Tags

CCSS.6.NS.B.3

Front

What is the product of 2.5 and 6.7?

Back

16.75

Tags

CCSS.6.NS.B.3

Front

What is the product of 1.2 and 2.1?

Back

2.52

Tags

CCSS.6.NS.B.3

Front

How do you determine the placement of the decimal in a product?

Back

Count the total number of decimal places in the factors. The decimal in the product should be placed so that it has the same number of decimal places.

Tags

CCSS.5.NBT.B.7

Front

If Sarah bought 2.5 meters of fabric at $6.20 per meter, how much did she spend?

Back

$15.50

Tags

CCSS.6.NS.B.3

Front

If Leslie purchased 4.5 pounds of grass seed at $1.22 per pound, how much did she spend?

Back

$5.49

Tags

CCSS.7.EE.B.3

Front

What is the product of 2.39 and 4.37?

Back

10.4443

Tags

CCSS.6.NS.B.3

Front

What is the importance of estimating products of decimals?

Back

Estimating helps to check if the final answer is reasonable and can guide you in identifying errors.

Tags

CCSS.5.NBT.B.7

Front

What is a common mistake when multiplying decimals?

Back

A common mistake is forgetting to count the decimal places correctly, leading to an incorrect placement of the decimal point.

Tags

CCSS.5.NBT.B.7