Decimal Word Problems

Front

What is the process to calculate the total cost of multiple items with the same price?

Back

To calculate the total cost, multiply the price of one item by the number of items. For example, if one bottle costs $2.43 and you buy 5 bottles, the total cost is $2.43 x 5 = $12.15.

Front

How do you split a bill evenly among a group of people?

Back

To split a bill evenly, divide the total amount by the number of people. For example, if the bill is $65.30 and there are 5 people, each person pays $65.30 ÷ 5 = $13.06.

Front

What is the formula to determine the number of intervals in a distance when taking breaks?

Back

To find the number of intervals (breaks), divide the total distance by the distance between breaks. For example, for a 16.8-mile race with breaks every 0.8 miles, the number of breaks is 16.8 ÷ 0.8 = 21.

Front

How do you calculate the remaining length of an object after cutting a portion off?

Back

To find the remaining length, subtract the length cut off from the original length. For example, if a board is 18.93 inches long and 2.09 inches is cut off, the remaining length is 18.93 - 2.09 = 16.84 inches.

Front

What is the method to find the cost per item when combining amounts?

Back

To find the cost per item, first combine the total amounts and then divide by the number of items. For example, if Miranda and her sister each had $25.84, combined they have $51.68, and if they buy 5 books, the cost per book is $51.68 ÷ 5 = $10.34.

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It represents a part of a whole and is written with a decimal point. For example, 0.5 represents half of a whole.

Front

How do you round a decimal to the nearest hundredth?

Back

To round a decimal to the nearest hundredth, look at the digit in the thousandths place. If it is 5 or greater, round up the hundredths place by one. If it is less than 5, keep the hundredths place the same.

Front

What is the importance of estimating in decimal calculations?

Back

Estimating helps to quickly assess the reasonableness of an answer. It allows you to check if your final answer is close to what you expect based on the numbers involved.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator (top number) by the denominator (bottom number). For example, 1/4 = 1 ÷ 4 = 0.25.

Front

What is the significance of place value in decimals?

Back

Place value determines the value of a digit based on its position in a number. In decimals, the first digit to the right of the decimal point is the tenths place, the second is the hundredths place, and so on.