1. Warm Up #7 (Page 28) 10/9/2014 Round the following numbers to 2 significant figures (Write the question) 1)0.0009456 g 2) 124,000 m 3)1.25 cm Perform the following calculation and report your answer to the appropriate number of significant figures 64.879 cm + 8956 cm + 79.10 cm

2. Significant Figures Review page Zeros do not count if they are behind a number and there is no decimal point. Remember when there is a decimal point, the zero could be significant. ***Find a decimal in a number, find the first significant figure in that number and that number and those that follow are all significant.

3. Examples

4. Scientific notation This is the standard form for scientific notation M x 10 n M has to be a number between 1 and 10. If n is a negative number, the number is smaller than 1. Move decimal to the left for standard form. If n is a positive number, the number is bigger than 1. Move the decimal to the right for standard form.

5. Write these in decimal form 6.2 x 10 4 1.5 x 10 -2 2.4 x 10 -5 7.06 x 10 3 6 x 10 6 1.949 x 10 2 2.5007 x 10 -1

6. Are these correct? 9.2 x 10 2 0.4 x 10 -4 1.8 x 2 5 860 x 10 -3 9.8988989887 x 10 1

7. Write these in Scientific Notation 6,011,000 0.058 35 0.009009 6.732104

8. Calculate the following Volume of a cube What is the volume of a cube if one of the sides is 1 x 10 8 cm?