changing units in the customary system lesson 3-6
TRANSCRIPT
Brainpop Quiz
Customary Units
http://www.brainpop.com/math/numbersandoperations/customaryunits/
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Small - - - - - - - - LargeInch (in) ---------- Foot (ft)-------- Yard (yd) ------- Mile (mi)
Ounce (oz) -------------- Pound (lb) -------------Ton (t)
Fluid Ounce (fl. oz.) -- Cup (c) -- Pint (pt) -- Quart (qt) -- Gallon (gal)
Changing Units
• Determine the direction of the change (LargeSmall or SmallLarge)
• Multiply or Divide by the appropriate conversion unit.– LS then multiply– SL then divide
Example 2
40 in = ______ ft
S L÷40 12
We can divide fractions so that remainders can be described as fractions.
1 1
x40 11 12
10
3
103 = 3 1
3
Computing With Units• Combine or subtract like units.• Regroup.
8 feet 7 inches
- 5 feet 11 inches
7 1 foot = 12 inches19
2 feet 8 inches
Homework Time
Pg. 150 #2-28 even
10-28 write if you’re going 10-28 write if you’re going S->L or L->S, and if multiply S->L or L->S, and if multiply
or divideor divide