Multiplying and Dividing Decimals in Word Problems

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 a decimal by a whole number?

Back

To multiply a decimal by a whole number, multiply as if there are no decimals, then count the total number of decimal places in the numbers being multiplied and place the decimal point in the product accordingly.

Tags

CCSS.5.NBT.B.7

Front

How do you divide a decimal by a whole number?

Back

To divide a decimal by a whole number, divide as if there are no decimals, then place the decimal point in the quotient directly above the decimal point in the dividend.

Tags

CCSS.6.NS.B.3

Front

What does it mean to share costs equally?

Back

Sharing costs equally means dividing the total amount by the number of people to find out how much each person pays.

Tags

CCSS.3.OA.A.3

Front

If 12 friends pay $83.40 for admission, how do you find out how much each person pays?

Back

Divide the total cost ($83.40) by the number of friends (12) to find the cost per person.

Tags

CCSS.6.NS.B.3

Front

What is the formula to find the cost of one item when given the total cost and the number of items?

Back

The formula is: Cost of one item = Total cost ÷ Number of items.

Tags

CCSS.6.RP.A.3B

Front

How do you calculate the total cost for multiple items?

Back

Multiply the cost of one item by the number of items to find the total cost.

Tags

CCSS.3.OA.A.3

Front

What is the meaning of '2.5 times' in a word problem?

Back

'2.5 times' means to multiply the original amount by 2.5.

Front

If Brandon worked 15 hours last week and 2.5 times that this week, how do you calculate his hours this week?

Back

Multiply 15 hours by 2.5 to find the total hours worked this week.

Tags

CCSS.7.EE.B.3

Front

How do you find the total cost for a group of friends going to the movies?

Back

Multiply the cost of one ticket by the number of friends to find the total cost.

Tags

CCSS.3.OA.A.3