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Converting Customary Units

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Transcript

  • 1. Pre-Algebra Pd. 3 Date: 1/14/2009
  • 2. Conversions
    • Objective: To convert linear measurements within the same system
  • 3.
    • To change units:
    • Multiply when going from larger units to smaller units.
    • 5 lb = ___ oz
    • 5 ∙ 16 = 80 oz
    Multiply
  • 4.
    • Divide when going from smaller units to larger units.
    • 28 fl oz = __ c
    • 28 ÷ 8 = 3 ½ c
    Divide
  • 5.
    • Ex. 1 :How many hours are in 31 days?
    • 31 days = ___ h
    • (larger to smaller)
    • MULTIPLY
  • 6. 31 ∙ 24 = 744 hrs
  • 7.
    • Ex. 2 :How many minutes are there in 840 seconds?
    • 840 sec = ____ min (Smaller to larger)
    • DIVIDE
  • 8. 840 ÷ 60
    • = 14 min
  • 9.
    • C/W #1:
    • How many days are there in 3 years?
    • 3 y = ____ d
    • 3 ∙ 365 = 1095 days
  • 10.
    • C/W #2:
    • How many seconds are there in 15 minutes?
    • 15 min = ___ sec
    • 15 ∙ 60 = 900 sec
  • 11.
    • C/W: Practice WS #13-18
  • 12. Let’s work with Length . . .
  • 13.
    • Ex. 3 : 96 in = ___ ft
    • (small to large)
    • DIVIDE
    • 96 ÷ 12
    • = 8 ft
  • 14.
    • Ex 4. : 3 mi = ___ ft
    • (large to small)
    • MULTIPLY
    • 3 ∙ 5280 = 15,840 ft
  • 15.
    • 3 mi = ___ in
    • Refer to PSSA Formula Sheet
    • Calculate how many inches in one mile.
    • ______in = 1 mi
    63,360
  • 16.
    • 3 mi = ________ in
    • 3 ∙ 63,360 = 190,080 in
    190,080
  • 17.
    • C/W: Practice WS #1 - 6
  • 18.
    • Customary Measures
    • Let’s see if “ The Gallon Man ” can help!
    • or Refer to PSSA Formula Sheet
  • 19.
    • G
    Q Q Q Q P P P P P P P P
  • 20.
    • C/W:
    • Convert the following :
    • 1. 8 gal = ___ qt
    • 2. 96 oz = ___ lb
    • 3. 30 lb = ___ oz
    • 4. 26T = ___ lb
    • 5. 96 qt = ___ gal
  • 21.
    • H/W : Customary Conversions WS
    • & finish Practice WS
  • 22.  
  • 23.