1.    Write each percent as a decimal number.

                     a.    26%

                     b.    192%

2.   Find:    37.5%  of  560

3.    Write 243.7% as a decimal number.

4.    Write 5.132 as a percent.

5.    Identify the expression(s) that are equal to 72%.

                7.2           0.72                               

6.    Last year, the original price of a popular sweater was $40. This year, the price is $54. Find the percent increase in price.

7.    Find:     a.    16 is what percent of 25.

                     b.    23 is 79.2% of what number.

                                (Round your answer to the nearest whole number.)

8.    On an Algebra test, Mario answered 30% of the questions correctly. The test contained a total of 80 questions. How many questions did Mario answer correctly?     That is, what is  30%  of  80?

9.    Choose the number below that has the greatest value.

            |-34|          -42          27           |12|

10.    On a cold morning, the temperature at sunrise was -22°. By noon, the temperature had increased by 15°. To help find the temperature at noon, do this addition.

                           -22 + 15 = __________

11.    When Barbara’s checking account balance fell below zero, to -$23.56, the bank charged her a penalty of $12. To help find Barbara’s balance after the penalty, do the addition below,

                           -23.56 + (-12)

12.    Do this addition:     

13.    Choose the expression below that is the same as:  345 – (-2589)

      -345  +  2589         345  +  2589         2589  -  345         345  -  2589

                                            Also give an answer to the expression.

14.   Find:       -37.91  -  (46.74)

15.    Find:       76 -  (-102)  -  37

16.    Solve the equation for x:

                    x  +  36  =  -36

                    x  =  __________

Topic F4.2

17.    Do each multiplication.

                     a.    (-7) • (9)

                     b.    (-9) • (-7)

18.    Choose the expression that has a positive value.

                   a.    3.1  •  15  •  (-2.5)

                   b.    -6  •  (-4.2)  •  24

                   c.    -2.4  •  (-32)  •  (-5.5)

19. Do each division.

                  a.    15    (-3)

                  b.    (-24)    (-6)

20.    Solve this equation for x:    13x  =  -9

21.    Find the value of each exponential expression.

                  a.    (-4)³

                  b.    (-4)²

22.    Use the order of operations to find the value of this expression.

              8  +  (-5)  •  [(-10)  +  24    4]

23.    Fill in the numbers that correctly illustrates the Distributive Property.

                         11 • [25 + (-8)] = 11 • _____ + _____ • (-8)

24.   Do this addition and subtraction:

                  17  -  35  +  7x  +  13  -  4x

25.    Determine whether the following expressions are associative or commutative properties.

                     a.  (-13)  +  25  =  25  +  (-13)

                     b.    [25  • (-34)]  •  2  =  25  •  [(-34)  •  2]