Word Problems Using Fractions and Decimals

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Presentation transcript:

Word Problems Using Fractions and Decimals By: Chris Spivey

Definitions Word Problem- Using your understanding and knowledge of mathematical concepts and principles to find solutions in new unfamiliar situations. Decimals- A number containing a decimal point like 0.07 and 1.35 are decimals. Fractions- A number that compares part of an object or a set with the whole. Example, The fraction ¾ means 3 parts out of a total of 4 equal parts.

Word Problem with Fractions Example: 2/3 of the 15 cars left the parking lot. An 8-3/4 foot board must be shortened to 6-1/3 feet. How much must be removed?

Solved With Fractions Answer: 10. Solution: 1/3 of 15 is 5. 2/3 of 15 is 2 x 5 = 10. The number of cars that left the parking lot is 10. Solution: removed = current length - new length 2 5/12 = 8 3/4 feet – 6 1/3 feet

Word Problem with Decimals To make a miniature ice cream truck, you need tires with a diameter between 1.465 cm and 1.472 cm. Will a tire that is 1.4691 cm in diameter work? Explain why or why not.

Solved With Decimals Now let's order these decimals from least to greatest. Let's start by writing one decimal beneath the other in their original order. 1.4650 1.4720 1.4691 Now let's order these decimals from least to greatest. 1.4650 1.4720 Answer :A tire that is 1.4691 cm in diameter will work since 1.4691 is between 1.465 and 1.472. 1 . 4 6 5 7 2 9

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