7BOBOdHHHHHHH H  -Z`@xHH(FG(HH(d'@l+/F=Draw@<;,<,  Q(,; (F  Nme!(}DSETW[[ct|xy,py*ty*x y'*vy y!yyy,py,l;y,l{y-vVy.Yy6  !depqz{|}  !;<=>hij23456>?x # 4 D V h y ) * + , - F u v   `      ! " L M N stuvw456788DV`mnop2345_`a)*+,-uvwx/012\]^&'()*YZ[\])*+,-./0123456789:;<DEFklmnopqrstuvwxyz{|} uvwxyEFGHIJKLMNOPQRSTUVWXYZ[ 7 8 ? @ R T }           !        %  1  2  3  B  D  E  S  U  V  e  j  u  {  }            &  )       s v       o p                x                ) ,    k  E H W X Y Pplh dD`\  Unit 12 Study Activities 1. a. Make a table for 105 and 106 similar to the one on page 6. then write sentences like those above. The sentence should relate the exponent to the number of tens multiplied together and to the number of zeros that follow 1 in t the answer. b. Then do the problem backward. First write down the whole number and then find the power of ten its equal to. The first line in the following table is done to get you started. Finish the other two lines. 6 zeros 6 tens multiplied together 1,000,000 = 10 X 10 X 10 X 10 X 10 X 10 = 10 6(exponent is 6) 10,000 = 100 = What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct): 2. a. make a table for 10-5 and 10 -6 similar to the one on page 8. Then write sentences that relate the exponent, the number of times 1/10 is used as a factor, and the number of places in the answer to the right of the decimal point. b. Then do the problem backward. First write down the decimal number. Then write the power of ten it equals. The first line is done to get you started. Complete the others. 5 places = 1/10 five times 0.00001 = 1/10 x 1/10 x 1/10 x 1/10 x 1/10 = 10 -5( exponent is -5) 0.0001 = 0.001 = 0.01 = What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct): 3. Complete the following exercises to check your understanding of writing numbers in scientific notation - and changing from numbers in scientific notation to decimal form. 1. Write the following numbers in scientific notation. a. 56.7 b. 56.7 X 102 c. 86,700 d. 0.00567 e. 10.1 X 10-6 f. 0.00236 X 10-6 2. Change the following numbers written in scientific notation to decimal form. a. 5.67 X 10 1 b. 7.2 X 105 c. 1.23 X 10-4 d. 8.67 X 10 22 e. 9.1 X 10-12 f. 1.02 X 10 -1 What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct): 4. Follow these steps to enter 1.6022 x 10-19 joules in your calculator. First, enter the first number - enter 1.6022 Second, tell the calculator that you are about to enter an exponent by pressing the key labeled EE ( which stands for enter exponent) - Press the EE key Third, enter the exponnnent of ten - in this case, the number 19. - Enter 19 Press the +/- key to make the exponent negative. Look at the display of your calculator to see how the calculator shows the number 1.6022 x 10-19 in the window. What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  5. 86,700,000,000,000,000,000,000 atams in one ounce of gold. Begin by converting 86,700,000,000,000,000,000,000 atoms to scientific notation. Follow the directions for entering scientific notation from the previous question, and convert the above numbers to scientific notation. What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  6. Enter 2456 X 10 80 into your calculator. Enter 2456 Press the EE key Enter 80 Press = key What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  7. Try this out for yourself. What is 102 X 103? What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  8. There are 2.7 X 10 8 hemoglobin molecules in a single human red blood cell, and there are about 5.0 X 106 human red blood cells in one cubic millimeter of blood. How many hemoglobin molecules are in one cubic millimeter of blood? What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  9. Multiply 3.567 X 10-4 by 8.5 X 10-3 What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct): 10. What is 105 divided by 103? What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct): 11. If you have a cube of gold that has a mass of 2.41 grams ( the cube measures 5 mm on an edge), and there are 7.4 X 1021 atoms of gold in the cube, what is the mass of one atom of gold? What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct): 12. Change milliamps to amperes. If you need assistance see page 29 in your book. What are you looking for? What do you need to answer the questions? Estimate what your answer(s) might be ( think of both numbers and terms to be used)? Write out the methods that you will use to solve the problem and show your work in calculating the answer(s). Your answer(s) are (make sure you are close to your estimate and the units are correct):  DSET|(HXN7 )6*N7DSET(H7T776* 7DSETR HPL   DUnit 12 Study Activities