Multiply Decimals

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 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 3.4 and 0.89?

Back

3.4 x 0.89 = 3.03.

Tags

CCSS.6.NS.B.3

Front

Estimate the product of 3.57 and 4.6.

Back

Estimate: Round 3.57 to 4 and 4.6 to 5. So, 4 x 5 = 20.

Tags

CCSS.5.NBT.B.7

Front

What is 9.8 multiplied by 7?

Back

9.8 x 7 = 68.6.

Tags

CCSS.6.NS.B.3

Front

What is the product of 0.34 and 0.87?

Back

0.34 x 0.87 = 0.2958.

Tags

CCSS.6.NS.B.3

Front

How many decimal places are in the product of 0.5 and 0.2?

Back

There are 2 decimal places in the product of 0.5 (1 decimal place) and 0.2 (1 decimal place), so the product will have 2 decimal places.

Tags

CCSS.5.NBT.B.7

Front

What is the importance of estimating products of decimals?

Back

Estimating helps to quickly assess the reasonableness of an answer and can simplify calculations.

Tags

CCSS.5.NBT.B.7

Front

What is 8.65 multiplied by 4?

Back

8.65 x 4 = 34.6.

Tags

CCSS.6.NS.B.3

Front

What is the rule for placing the decimal point in multiplication?

Back

Count the total number of decimal places in the factors and place the decimal point in the product so that it has that many decimal places.

Tags

CCSS.5.NBT.B.7