Unit Conversion Tutorial

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Problem: Convert 165 inches to feet.

Which conversion(s) will be useful

1 mile (mi) = 5280 feet (ft) [Exact] 1 yard (yd) = 3 feet (ft) [Exact] 1 foot (ft) = 12 inches (in) [Exact] 1 inch (in) = 2.54 centimeters (cm) [Exact] 1 mile (ft) = 1.609 kilometers (km) [Approximate] 1 meter (m) = 3.28 feet (ft) [Approximate]

1 year (yr) = 365 days (d) [Exact (non-leap)] 1 week (wk) = 7 days (d) [Exact] 1 day (d) = 24 hours (hr) [Exact] 1 hour (hr) = 60 minutes (min) [Exact] 1 minute (min) = 60 seconds (s) [Exact]

Check Answer Just Tell Me!

Enter the correct ratio(s) based on the conversion(s) you chose.
Be sure to include the unit abbreviations!! (no spaces)

Check Ratio Just Tell Me!

165in ×

(

)

×

(

)

×

(

)

=

2

Digits in a number are all significant except:    • leading zeroes are never significant    • trailing zeroes are only significant if       there are numbers after a decimal point ←The number of sig.figs. in the answer is       the smallest of the other values.

Now do the calculation, rounding correctly.    (don‘t forget the unit abbreviation)    (add 2 or 3 for squared or cubed units)    Check CalculationJust Tell Me!

How Many? 1 sig. fig. 2 sig. figs. 3 sig. figs. 4 sig. figs. infinite(exact)

How Many? 1 sig. fig. 2 sig. figs. 3 sig. figs. 4 sig. figs. infinite(exact)

How Many? 1 sig. fig. 2 sig. figs. 3 sig. figs. 4 sig. figs. infinite(exact)

How Many? 1 sig. fig. 2 sig. figs. 3 sig. figs. 4 sig. figs. infinite(exact)

How Many? 1 sig. fig. 2 sig. figs. 3 sig. figs. 4 sig. figs. infinite(exact)

←This will be the smallest of the other numbers.

Now verify the number of significant figures. Get a HintJust Tell Me!

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