Multiplying and Dividing Decimals Word Problems

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times (3 + 3 + 3 + 3 = 12).

Front

What is division?

Back

Division is a mathematical operation where a number is split into equal parts. For example, 12 divided by 3 (12 ÷ 3) means splitting 12 into 3 equal parts, which equals 4.

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How do you find the total cost of multiple items?

Back

To find the total cost of multiple items, multiply the cost of one item by the number of items. For example, if one chair costs $349.50, the cost of 5 chairs is 349.50 x 5 = $1,747.50.

Front

How do you calculate the cost per item?

Back

To calculate the cost per item, divide the total cost by the number of items. For example, if 4 pounds of sugar cost $2.56, the cost per pound is 2.56 ÷ 4 = $0.64.

Front

What is the formula for finding the contribution per student?

Back

To find the contribution per student, divide the total cost by the number of students. For example, if the total cost of a trip is $802.50 and there are 30 students, each student contributes 802.50 ÷ 30 = $26.75.

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What is a word problem in mathematics?

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 skills to find the solution.

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting the number to a nearby value that is easier to work with, often to a specified number of decimal places.

Front

What is the importance of estimating in multiplication and division?

Back

Estimating helps to quickly assess the reasonableness of an answer before performing exact calculations, making it easier to check for errors.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over 1, then multiply the numerator and denominator by 10 for each digit after the decimal point. For example, 0.75 = 75/100 = 3/4.

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What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. This means that if you multiply a number and then divide by the same number, you will return to the original number.