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# Conversions

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A guide for parents of struggling fifth grade students, especially in the area of conversions.

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### Conversions

1. 1. Conversions A guide for parents of fifth grade students who struggle with conversions.
2. 2. Before we can begin… <ul><li>C us tomary measurement – used in US A </li></ul><ul><li>M e tric measurement – used almost e verywhere else! </li></ul>Length – how long? Capacity – how much does it hold? Mass – weight? Temperature – how hot/cold?
3. 3. Customary Measurement Units <ul><li>Length – inches, feet, yards, miles </li></ul><ul><li>Capacity – fl oz, cup, pint, quart, gallon </li></ul><ul><li>Mass – ounces, pounds, tons </li></ul><ul><li>Temperature - Fahrenheit </li></ul>
4. 4. Metric Measurement Units <ul><li>Length – millimeter, centimeter, meter, kilometer </li></ul><ul><li>Capacity – milliliter, liter </li></ul><ul><li>Mass – milligram, gram, kilogram </li></ul><ul><li>Temperature - Celsuis </li></ul>*Metric units are based on powers of ten – the examples given are the common units. Others do exist – see child’s notebook for more.
5. 5. Customary to Metric Conversions Length Kilometers 1.6 Miles Meters 0.9 Yards Centimeters 30.5 Feet Centimeters 2.54 Inches To Find Multiply By When You Know
6. 6. Customary to Metric Conversions Capacity Liters 0.24 Cups Liters 3.8 Gallon Liters 0.95 Quarts Liters 0.47 Pints Milliliters 30 Fluid Ounces To Find Multiply By When You Know
7. 7. Customary to Metric Conversions Mass & Temperature Celsius -30 ÷2 Fahrenheit Kilograms 0.45 Pounds Grams 28 Ounces To Find Multiply By When You Know
8. 8. Sample Problem <ul><li>Use the previous charts to help answer this question: </li></ul><ul><li>Matthew ride his bike 3 miles to the park, 1.5 miles on the bike trail, and comes home the same way. How many kilometers did Matthew ride on his bike? </li></ul>
9. 9. Solution to Sample Problem <ul><li>Matthew rode 3 miles to the park, 1.5 miles at the park, and 3 miles back home. </li></ul><ul><li>3 + 3 + 1.5 = 7.5 miles </li></ul><ul><li>How many kilometers did he ride? </li></ul><ul><li>7.5 miles x 1.6 = 12 kilometers </li></ul>
10. 10. Sample Problem 2 <ul><li>Now try this one: </li></ul><ul><li>A fish tank holds 5 gallons of water. If 2 gallons are removed, how many liters of water remain in the fish tank? </li></ul>
11. 11. Solution to Sample Problem 2 <ul><li>Fish tank is holding 5 gallons minus 2 gallons . </li></ul><ul><li>5 – 2 = 3 </li></ul><ul><li>How many liters are remaining? </li></ul><ul><li>3 gallons x 3.8 = 11.4 liters </li></ul>
12. 12. Metric to Customary Conversions Length Miles 0.6 Kilometer Yard 1.1 Meters Feet 3.3 Meters Inches 0.4 Centimeters To Find Multiply By When You Know
13. 13. Metric to Customary Conversions Capacity Gallons 0.26 Liters Quarts 1.05 Liters Pints 2.1 Liters Fluid ounces 0.03 Milliliters To Find Multiply By When You Know
14. 14. Metric to Customary Conversions Mass & Temperature Fahrenheit x2 +30 Celsius Pounds 2.2 Kilograms Ounces 0.035 Grams To Find Multiply By When You Know
15. 15. Sample Problem <ul><li>Jose wears a sweater when it is 40ºF, a jacket when it is 60ºF, and a t-shirt when it is 80ºF. He looks outside and the temperature is 25ºC. What will he choose to wear that day? </li></ul>
16. 16. Solution to Sample Problem <ul><li>Jose wears a sweater when it is 40ºF , a jacket when it is 60ºF , and a t-shirt when it is 80ºF . He looks outside and the temperature is 25ºC . What will he choose to wear that day? </li></ul><ul><li>25 x 2 = 50 + 30 = 80… so a t-shirt! </li></ul>
17. 17. Sample Problem 2 <ul><li>Mr. Alvarez’s dog weighs 50 kilograms. Mr. Alvarez weighs 150 pounds. Who weighs more – Mr. Alvarez or his dog? </li></ul>
18. 18. Solution to Sample Problem 2 <ul><li>Mr. Alvarez’s dog weighs 50 kilograms . Mr. Alvarez weighs 150 pounds . Who weighs more – Mr. Alvarez or his dog? </li></ul><ul><li>Dog: 50 kg x 2.2 = 110 pounds </li></ul><ul><li>Mr. Alvarez = 150 pounds </li></ul><ul><li>… so Mr. Alvarez weighs 40 pounds more. </li></ul>
19. 19. Additional Resources <ul><li>All Math - plug in data & change units </li></ul><ul><li>IXL – Your child has username & password </li></ul><ul><li>E-How – a great website for parent/student interaction </li></ul><ul><li>Yahoo! Kids – great games to practice conversions </li></ul>
20. 20. Remaining Questions??? <ul><li>If you have remaining questions, comments, or suggestions for improvement, please e-mail me at: </li></ul><ul><li>[email_address] </li></ul>