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

Test 6, Units 1-5, Semester Exam Flashcards

(65 cards)

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1
Q

9384

x 687

A

6,446,808

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2
Q

212,217 divided by 381

A

557

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3
Q

.095

x6.21

A

.58995

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4
Q

17.187 divided by .337

A

51

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5
Q

1 1/4

7 2/3

+ 3 1/2

A

1 3/12

7 8/12

+ 3 6/12

11 17/12 = 12 5/12

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6
Q

19 5/8

  • 6 3/4
A

19 5/8 = 18 13/8

  • 6 6/8 = - 6 6/8
                12  7/8
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7
Q

12 1/2 x 2/5 =

A

25/2 x 2/5 =

5/1 x 1/1 = 5

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8
Q

6/7 divided by 9/14 =

A

6/7 x 14/9 =

2/1 x 2/3 =

4/3 = 1 1/3

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9
Q

12/18 = x/24

A

18x = 288

18x/18 = 288/18

x = 16

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10
Q

1 1/2 % of 312

A

312 x .015 =

4.68

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11
Q

250% of 50

A

50 x 2.5 =

125

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12
Q

6 is 25% of what number?

A

6 divided by .25 =

24

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13
Q

20 is what percent of 80?

A

20/80 =

1/4 = 25%

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14
Q

(-6) x (-4)

A

24

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15
Q
  • 11
  • (+8)
A

-19

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16
Q

(-36) divided by (4)

A

-9

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17
Q

5x2(4xy2)

A

20x3y2

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18
Q

(24a3b2) divided by 4a2b5

A

24a3b2 = 6 a

4a2b5 = b3

6a/b3

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19
Q

26

A

2 x 2 x 2 x 2 x 2 x 2

4 x 4 x 4

16 x 4

64

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20
Q

square root of 5,776

A

76

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21
Q

nonterminating, nonrepeating decimal

A

irrational number

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22
Q

hundredth

A

percent

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23
Q

number with only 1 and itself as factors

A

prime number

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24
Q

first term in a ratio

A

antecedent

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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

8th Math - Pre-Algebra (43 decks)

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