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Find the distance and midpoint of the segment whose endpoints are -4 and 18. Find the distance between –8 and 14 on a number line. If the midpoint is –2 and one endpoint is 12, what is the other endpoint? Y is the midpoint of SW. If Y= -4 and W=20 what is S? SCIENTIFIC NOTATION What do numbers look like when they are in scientific notation? 1.23 4.546 7.4 3.0 8.12 9.33 5.4564 6.3 2.56 Can a number look like…. 12.3 .897 Definition Scientific Notation A number is expressed in SN when it is in the form a 10 n 1 a 10 ,where And n is an integer. ARE THE FOLLOWING IN SCIENTIFIC NOTATION? YES OR NO WHY? WHY? POSITIVE OR NEGATIVE EXPONENTS? PUT THE FOLLOWING IN SCIENTIFIC NOTATION. 2.6 X 10 3.41 X 10² 10 3 1,000,000 Why do you think scientific notation was invented? Write with exponents! 10 2 10 4 .1 10 1 Write the following in standard notation (decimal notation). 10 3 .001 2 10 100 10 5 .00001 4 10 10,000 The state of NC has approximately 19,000,000 acres of forested land. Which is another way to express this area? Most bacteria have a diameter of 1 to 5 microns. A micron is 4 equal to 1 10 cm. What is the measure of a micron in SN ? Earth orbits the sun at a speed of about 6.7 10 4 miles per hour. At this speed, how far does Earth travel in 24 hours? What is another way to write 21,763? 2.1763 10 4 What is another way 7 to express 8.7 x 10 87,000,000 2 7.3 10 X 100 2 7.3 10 10 7.3 2 2 9.4 x10 x1,000 2 3 9.4 x10 x10 5 9.4 x10 9.1 x 10³ 7 x 10² 1.3 x 10 16 . 10 5 .2 10 = 3 8 10 8 1 2 10 x10 2 10 5 4 5.6 x 10³ 5,600 5.6 x 10 56 1.2 x 10² 120 What are the coordinates of the x intercept? 3x – 2y = -6 The following can be used as problems of the day that the students can work as they enter the room. SCIENTIFIC NOTATION PROBLEMS GREAT JOB!!!!