QUIZ 9:  SECTIONS 5.4, 5.5, 5.6; Go to: http://www.nvaphysics.com/SessionGrades/Math104/SP12/CHAPTER5.htm  to see online Chapter  5 grid. No calculators! DUE TUESDAY, APRIL THIRD, START OF CLASS, WHEN  QUIZ 10 WILL BE DISTRIBUTED.

SECTION 5.4

In the first 4 problems, find products. Please show work vertical –style, aligning the digits above and below each other. Yes, show the number of digits to the right of the decimal points placed on both horizontal levels; show how this effects the result  in terms of the number of  digits to the right of final answer’s  decimal. REMEMBER TO ACCOUNT FOR THE SIGN OF FINAL ANSWER!

1. (22.5)(-0.65)

2. (-0.007)(0.0042)

3. Multiply in two ways (a) exactly   (b) using front end rounding—see example 3:  
 

(-38.1)(52)

4. (-84.5)(3.5)

SECTION 5.5  In this section % means division.

For the next problem, simplify by using the  order of operations aka

PEMDAS

5.     38.7 + 12.7(11.5 – 13.5)

6. Divide in two ways (a) exactly   (b) using front end rounding—see

 example 3, section 5.4 or example 5.  

9.4%1.35

7. Round the quotient to the nearest thousandth.  (-6.2)%(-0.012)

8. Round the quotient to the nearest thousandth.  -481.6%18

SECTION 5.6  In this section / means division and indicates a fraction.

9.  Write > or <  between this pair of numbers. 0.3215      0.3199

10. Order the  numbers listed from smallest to largest moving rightward on

 the  line. 5.9, 5.89, 5.0089, 5.891, 5.592, 5.899, 5.894, 5.000

11. Order the  numbers listed from smallest to largest moving rightward on

 the number line  line. 6/16, 4/10, 0.37, 0.4001

12. Write the mixed as a decimal, read five  and   four  sevenths: 5 4/7