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Factor Label Method of Problem Solving. Make sure that you…. Always label!!! Begin with the unit you want to find Cancel out the labels. The label that you want to find will be the only one that does not cancel out. Examples. How many seconds are there in August?. Conversion Factors:

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Factor LabelMethod of Problem Solving


Make sure that you
Make sure that you…

  • Always label!!!

  • Begin with the unit you want to find

  • Cancel out the labels

The label that you want to find will be the only one that does not cancel out


Examples
Examples

How many seconds are there in August?

Conversion Factors:

60 sec = 1min 60 min = 1hour

24 hours = 1day 31 days = August

24 hours

60 min

60 sec

31 days

?sec =

= 2,678,400 sec

1

1 day

1 hour

1 min


Interesting Facts for Sample Problems

  • Longest Female Beard

    • Vivian Wheeler of Wood River, Illinois, USA

    • The longest strand was measured at 27.9 cm in 2000

  • How many km is this?

27.9 cm

1km

1000 m

1 m

100 cm

= 2.79 X 10-4 km

? km =


Heaviest Man

The heaviest person in medical history was Jon Brower Minnoch (USA, 1941–83). He was 6’1” tall and weighed 442 kg in September 1976.

How many pounds did he weigh?

(HINT : use pg 18-19 in the back of your planner for conversion factors)

442 kg

2.2 lbs

? lb =

= 972.4 lbs

1

1 kg


Largest SpiderThe world's largest known spider is a male goliath bird-eating spider It had a record leg-span of 28 cm.

How many mm is this?

10 mm

28 cm

? mm =

= 280 mm

1

1 cm


  • Competitive Eating

    • Takeru Kobayashi swept over his competition at the Nathan's Famous hot dog eating competition, gulping down 53.5 hot dogs in 12 minutes,

      How many kg of hot dog did Takeru eat in 12 min? (HINT: 1 hotdog weights about 0.11 lb)

1 kg

2.2 lb

53.5 hotdogs

0.11 lb

1 hotdogs

? kg=

= 2.7 kg

  • The 5-foot-7, 132-pound Kobayashi, of Nagano, Japan,. He ate an average of one every 13 seconds

  • "I think he has proven, once again, that he is one of the finest athletes of any sport in the world," said Richard Shea, a spokesman for the contest.


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