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3-3 Adding & Subtracting Decimals &

2.025 -1.222. 3-3 Adding & Subtracting Decimals &. 2.078 + 1.302. 3-4 Scientific Notation. Learn to add & subtract decimals. Can it’s neighbor give it 5+ balloons?. 1. 2. 3. Subtract from Zero Methods. Subtracting from zero methods http://youtu.be/NCWfLrLirKQ

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3-3 Adding & Subtracting Decimals &

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  1. 2.025 -1.222 3-3 Adding & Subtracting Decimals & 2.078 +1.302 3-4 Scientific Notation

  2. Learn to add & subtract decimals Can it’s neighbor give it 5+ balloons? 1. 2. 3.

  3. Subtract from Zero Methods Subtracting from zero methods http://youtu.be/NCWfLrLirKQ https://www.youtube.com/watch?v=LeHQn_5GtF0 http://www.youtube.com/watch?feature=player_embedded&v=rpKWFg9PSwI Line up decimals Bring DOWN the decimal Add a zero if needed Solve 2.30 -1.128 .025 + .75

  4. Practice Quiz – Get your dry erase boards • http://my.hrw.com/math06_07/nsmedia/practice_quizzes/msm1/msm1_pq_dec_03.html Interactive http://my.hrw.com/math06_07/nsmedia/interactivities/mia011/mia011.html

  5. 3-4 Scientific Notation • How to make really, really, REALLY • BIG numbers easier to write and read! • 22, 000, 000, 000, 000, 000, 000, 000 • = 2.2 x 1022

  6. Scientific Notation:

  7. 10 x 10 x10 x 10 x = 104 Multiplying by Powers of Ten – count the zeros – move your decimal Count the zeros (3) Move your decimal to the right 3 places Add placeholder zeros Add the period commas Count the zeros (4) Move your decimal to the right 4 places Add placeholder zeros Add the period commas

  8. VIDEO Remember, move the decimal to the left and place it to the right of the FIRST non-zero digit. It should make a number greater than or equal to ONE but LESS THAN TEN.

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