Test 6, Units 1-5, Semester Exam Flashcards Preview

8th Math - Pre-Algebra > Test 6, Units 1-5, Semester Exam > Flashcards

Flashcards in Test 6, Units 1-5, Semester Exam Deck (65):
1

9384

x 687

---------

 

6,446,808

2

212,217 divided by 381

 

557

3

   .095

x6.21

---------

 

.58995

4

17.187 divided by .337

 

51

5

   1  1/4

   7  2/3

+ 3  1/2

------------

 

1  3/12

7  8/12

+ 3  6/12

--------------

11   17/12 = 12  5/12

6

19  5/8

- 6  3/4

-----------

 

19  5/8  =  18  13/8

- 6  6/8  =  -  6  6/8

--------------------------------

                    12  7/8

7

12  1/2 x 2/5 =

 

25/2 x 2/5 =

5/1 x 1/1 = 5

8

6/7 divided by 9/14 =

 

6/7 x 14/9 =

2/1 x 2/3 =

4/3 = 1  1/3

9

12/18  =  x/24

 

18x = 288

18x/18 = 288/18

x = 16

10

1 1/2 % of 312

 

312 x .015 =

4.68

11

250% of 50

 

50 x 2.5 =

125

12

6 is 25% of what number?

 

6 divided by .25 =

24

13

20 is what percent of 80?

 

20/80 =

1/4 = 25%

14

(-6) x (-4)

 

24

15

   -11

- (+8)

--------

 

-19

16

(-36) divided by (4)

 

-9

17

5x2(4xy2)

 

20x3y2

18

(24a3b2) divided by 4a2b5

 

24a3b2  =  6 a

---------------------

4a2b5 = b3

6a/b3

19

26

 

2 x 2 x 2 x 2 x 2 x 2

4 x 4 x 4

16 x 4

64

20

square root of 5,776

 

76

21

nonterminating, nonrepeating decimal

 

irrational number

22

hundredth

 

percent

23

number with only 1 and itself as factors

 

prime number

24

first term in a ratio

 

antecedent

25

second term in a ratio

 

consequent

26

number with more than two factors

 

composite number

27

distance covered in a unit of time

 

speed

28

Write the prime factors of 36 using exponents

 

36 = 2 x 2 x 3 x 3

22 x 32

29

reduce 16/24 to lowest terms

 

2/3

30

write 5/8 as a decimal

 

.625

31

round off 176,372,982 to the nearest hundred thousand.

 

176,400,000

32

write the principal square root of 9

 

3

33

find the value of  6 + 82 (12-11)

 

6 + 64(1)

70

34

write 1/6 as a repeating decimal.

 

.16 with a line over the 6

35

Evaluate 3xy + b  if  x = -4, y = 2, and b = 5

 

3(-4)(2) + 5

-24 + 5

-19

36

write the least common multiple of 9, 12, 15

 

9 = 3 * 3

12 = 2 * 2 * 3

15 = 3 * 5

lcm = 2 * 2 * 3 * 3 * 5 = 180

37

write the number of quarts in a peck

 

8

38

convert .75 mile to feet

5,280 x .75

3960

39

solve the equation   4x - 7 = 2x + 7

 

 

4x - 2x - 7 = 2x - 2x + 7

2x - 7 + 7 = 7 + 7

2x = 14

x = 7

40

write 1 1/2% as a decimal

 

.015

41

convert 38 ounces to pounds

 

38 divided by 16

2 3/8 lb.

42

subract 4 min. 18 sec. from 10 min.

 

9 min  60 sec

-  4 min 18 sec

--------------------------

5 min 42 sec

43

find the percent of increase to the nearest whole percent from 12 to 20

 

Increase from 12 to 20 is 8:

8 over the original amount:

8/12 = 2/3 = 67%

44

find an 18% discount on a list price of $25

 

$25

x.18

-------

$4.50

45

simplify 4x2 - 3xy + 2xy + 9x2

 

13x2 - xy

46

find the speed of a car that travels 210 miles in 5 hours

 

210 divided by 5

42 mph

47

find the commission on a sale of $24,618 at 1  1/2%

 

$24,618 x .015

$369.27

48

solve x/5 + 2 = 12 - 7

 

x/5 + 2 = 5

x/5 + 2 -2 = 5-2

x/5 = 3

5 * x/5 = 3 * 5

x = 15

49

.3x - 3 = .9

 

3x - 30 = 9

3x - 30 + 30 = 9 + 30

3x = 39

3x/3 = 39/3

x = 13

50

6x - 9 = 4x + 3

 

6x - 4x - 9 = 4x-4x + 3

2x - 9 + 9 = 3 + 9

2x = 12

x = 6

51

2/5x + 5 = 3 + 7

 

2/5x + 5 = 10

2/5x + 5 - 5 = 10 - 5

2/5x = 5

5/2 * 2/5x = 5/2 * 5

x = 25/2

x = 12.5

52

write an equation to show two times a certain number is 8

 

2x = 8

53

write the number of terms in a binomial

 

2

54

write the number of years in a century

 

100

55

____dL = 1 hL

 

milli, centi, deci, unit, deka, hecto, kilo

from hecto to deci is 3 places, so move 3 places right

1000

56

____mL = 1kL

 

milli, centi, deci, unit, deka, hecto, kilo

from kilo to milli is 6 places, so move 6 places right:

1,000,000

57

___kg = 35 lb. (to the nearest tenth)

 

.45 x 35 = 15.75 = 15.8

58

___qt. = 16 liters (nearest tenth)

 

1.06 x 16 = 16.96 = 17.0

59

___oC = 68oF

 

C = 5/9(68 - 32)

C = 5/9(36)

C = 20

60

write using scientific notation

43,000,000

 

4.3 x 107

61

write using scientific notation

.000631

 

6.31 x 10-4

62

write using scientific notation

8,463.8

8.4638 x 103

63

expanded form:

1.06 x 10-4

 

.000106

64

expanded form:

5.4 x 105

 

540,000

65

expanded form:

3.8 x 107

 

38,000,000