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 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.

Front

What is the process for dividing decimals?

Back

To divide decimals, move the decimal point in the divisor to the right until it is a whole number, then move the decimal point in the dividend the same number of places. Divide as usual.

Front

What does it mean to share costs equally?

Back

Sharing costs equally means dividing the total amount by the number of people sharing the cost, so each person pays the same amount.

Front

How do you find the cost per item?

Back

To find the cost per item, divide the total cost by the number of items purchased.

Front

What is the formula for calculating total earnings?

Back

Total earnings can be calculated by multiplying the hourly rate by the number of hours worked.

Front

What is a word problem in math?

Back

A word problem is a mathematical problem that is presented in the form of a story or real-life scenario, requiring interpretation and problem-solving.

Front

How do you calculate the total cost after a discount?

Back

To calculate the total cost after a discount, subtract the discount amount from the original price.

Front

What is the importance of estimating in multiplication and division?

Back

Estimating helps to quickly determine if an answer is reasonable and can assist in checking the accuracy of calculations.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as one unit. For example, if a car travels 150 miles in 3 hours, the unit rate is 50 miles per hour.