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Measuring Length

Measuring Length. Length Units. The main unit for length is the meter or “ cm ” for short There are also other smaller and bigger units like: Millimeters or “ mm ” for short Centimeters or “ cm ” for short Kilometers or “ km ” for short The units are how we label an answer.

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Measuring Length

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  1. Measuring Length

  2. Length Units • The main unit for length is the meter or “cm” for short • There are also other smaller and bigger units like: • Millimeters or “mm” for short • Centimeters or “cm” for short • Kilometers or “km” for short • The units are how we label an answer

  3. Length Tools/Instruments • The tool or instrument used to find length is either a ruler or a meterstick

  4. Two sides of a Ruler • There are two sides to a ruler: centimeters and inches • In science you will NEVER EVER use the inches side! • The smaller/shorter dashes with NO numbers represent millimeters “mm” • The longer dashes with numbers represent centimeters “cm”

  5. Finding the Length • Find the twobig numbers that the line/object is between. • Use the lower of the two numbers. This is the first part of your answer. • Now count the dashes after the lower number. This is the second part of your answer • Take both parts of your answer and put a decimal between the two numbers • Label your answer with the unit centimeters or “cm” for short.

  6. The nail is between ___5______ and ____6_____ • I will use the _____5____ since it is smaller • 3. I count ______1_______ dashes after the big number • Answer: ____5___.____1___ centimeters

  7. The lineis between ____3_____ and _____4____ • 2. I will use the ____3_____ since it is smaller • 3. I count _____4________ dashes after the big number • 4. Answer: ____3___.___4____ centimeters

  8. The lineis between _________ and _________ • 2. I will use the _________ since it is smaller • 3. I count _____________ dashes after the big number • 4. Answer: _______._______ centimeters

  9. The lineis between ____11_____ and ____12_____ • 2. I will use the ___11______ since it is smaller • 3. I count ______6_______ dashes after the big number • 4. Answer: ___11____.___6____ centimeters

  10. The lineis between _________ and _________ • 2. I will use the _________ since it is smaller • 3. I count _____________ dashes after the big number • 4. Answer: _______._______ centimeters

  11. The lineis between ____1_____ and ____2_____ • 2. I will use the ___1______ since it is smaller • 3. I count ______8_______ dashes after the big number • 4. Answer: __1_____._____8__ centimeters

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