Multiplication and Division of Decimals Word Problems

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What is multiplication of decimals?

Back

Multiplication of decimals involves multiplying two decimal numbers together to find their product. For example, 0.5 x 0.2 = 0.1.

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What is division of decimals?

Back

Division of decimals is the process of dividing one decimal number by another. For example, 0.6 ÷ 0.2 = 3.

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How do you multiply a whole number by a decimal?

Back

To multiply a whole number by a decimal, multiply as if there are no decimals, then place the decimal point in the product. For example, 3 x 0.4 = 1.2.

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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. For example, 1.5 ÷ 3 = 0.5.

Front

What is the formula to find total sales from price and quantity sold?

Back

Total Sales = Price per Item x Quantity Sold. For example, if a book costs $17.75 and 342 copies are sold, Total Sales = 17.75 x 342.

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How do you find the weight of an object when given a multiple?

Back

To find the weight of an object when given a multiple, multiply the weight of the first object by the given multiple. For example, if one rock weighs 3.87 grams and the second weighs five times as much, the second rock weighs 3.87 x 5.

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What is average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken. For example, if Mr. Williams ran 13.2 miles in 1.6 hours, Average Speed = 13.2 ÷ 1.6.

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How do you calculate price per pound?

Back

Price per pound is calculated by dividing the total cost by the weight in pounds. For example, if 1.5 pounds of beef costs $6.75, Price per Pound = 6.75 ÷ 1.5.

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How do you calculate the cost of fabric when given the price per yard?

Back

To calculate the cost of fabric, multiply the price per yard by the number of yards purchased. For example, if silk fabric costs $7.85 per yard and 0.8 yards are purchased, Cost = 7.85 x 0.8.

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What is the importance of estimating in multiplication and division of decimals?

Back

Estimating helps to quickly assess whether an answer is reasonable before calculating the exact answer.