1. Lesson 3.7 Concept: Convert units of measure
Guidelines: Multiply by the conversion factor when converting from a larger measure to a smaller measure.
Divide by the conversion factor when converting from a smaller measure to a larger measure.
Time
Hours to minutes (•60)
Minutes to seconds (•60)
Weeks to days (• 7)
Years to days (•365)
Years to weeks ( • 52)
Minutes to hours (÷ 60)
Seconds to minutes (÷ 60)
Days to weeks (÷ 7)
Days to years (÷ 365)
Weeks to years (÷ 52)

2. 14 • 60 = 840 min. 12 hours Time Hours to minutes (•60)
Minutes to seconds (•60)
Weeks to days (• 7)
Years to days (•365)
Years to weeks ( • 52)
Minutes to hours (÷ 60)
Seconds to minutes (÷ 60)
Days to weeks (÷ 7)
Days to years (÷ 365)
Weeks to years (÷ 52)
Practice:
14 hours to minutes minutes to hours 1 2
14 • 60 = 840 min.
60 ) 720
12 hours 60
120
120

3. Metrics Conversions
milli centi meter kilo
liter
gram
Multiply by the conversion factor when converting from a larger measure to a smaller measure.
Divide by the conversion factor when converting from a smaller measure to a larger measure
3 kiloliter to liters 5
140 milligrams to grams
200
600 = 600 liters 1
140 ÷ 1000 = 0.14 grams
3 • = 5 1 or
140 • = 0.14 grams 1

4. Kilo Hecto Deka Meter Deci Centi Milli Liter Gram
Base Unit
Kilo Hecto Deka Meter Deci Centi Milli
Liter
Gram
* Bigger to smaller move the decimal to the right (multiply)
* Smaller to bigger move the decimal to the left (divide)