Unit Conversions YOUR PHONE IS NOT A CALCULATOR!

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Presentation transcript:

Unit Conversions YOUR PHONE IS NOT A CALCULATOR! WCHS Chemistry

2 ft Intro Question My cat Linden is 24 inches from nose to tail. How long is she in feet? 2 ft

+3 +2 +1 Keds → wombys → Tims → Sandys → dens → nargs

RULES Always cancel units! Be neat! BRING A CALCULATOR EVERYDAY FROM NOW ON! Always cancel units! Be neat! Write conversions as fractions with units Set up fractions so units will cancel Keep going until the units you want are on top of the last fraction Multiply numbers horizontally (across) Divide numbers vertically (up and down)

ONE STEP CONVERSIONS - Easy! 45 eggs = ____________ dozen 60 quarters = ____________dollars 60 quarters 1 dollar 45 eggs 1 dozen = 15 dollars = 3.75 dozen 1 4 quarters 1 12 eggs 1 week = __________seconds 234 seconds = _________hours 234 seconds 1 minute 1 week 7 days 1 hr 24 hours 60 mins 60 sec = 0.065 hrs 60 mins 1 week 1 day 1 1 60 seconds 1 hour 1 min = 604,800 sec

MULTISTEP CONVERSIONS - Tougher 1 inch = 2.54 cm → DISTANCE GATEWAY 5.0 km 1000 m 100 cm 1 inch 1 ft 1 1 km 1 m 2.54 cm 12 inches = 16,404.2 ft