Test 2, 1.20 - 1.40 Flashcards Preview

8th Math - Pre-Algebra > Test 2, 1.20 - 1.40 > Flashcards

Flashcards in Test 2, 1.20 - 1.40 Deck (35)
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1
Q

726.1
13.74
+692.83
————–

A

1432.67

2
Q
  1. 6
    - 9.783
    - ———-
A

3.817

3
Q

.004
x .06
——–

A

.00024

4
Q

.855

x34. 7
- ———–

A

29.6685

5
Q

1.827 divided by .87

A

2.1

6
Q

5 divided by 6 round to nearest hundredth

A

.83

7
Q

42% of $76

A

.42 x 76 = $31.92

8
Q

6 3/4% of 800

A

.0675 x 800 = 54

9
Q

36 is what percent of 60?

A

36/60 = 6/10 = .6 = 60%

10
Q

453% of 30

A

4.53 x 30 = 135.9

11
Q

4/5 as a percent is

A

4/5 = 8/10 = .8 = 80%

12
Q

.75 as a percent is

A

75%

13
Q

.675 as a percent is

A

67.5%

14
Q

5/8 as a percent is

A

5/8 = 50/80 = 6.25/10 = .625 = 62.5%

15
Q

1/4 as percent is

A

1/4 = 10/40 = 2.5/10 = .25 = 25%

16
Q

Round off .736 to the nearest tenth.

A

.7

17
Q

Write the consequent in the ratio 6:19

A

19

18
Q

reduce the ratio 8/12 to lowest terms

A

2/3

19
Q

write the greater: .513 or .5129

A

.513

20
Q

complete the proportion: 9/11 = x/121

A
You can get this two ways:
11 will go into 121 11 times, so 11 x 9 = 99
or
cross multiply  11x = 9 x 121
11x = 1089
x = 1089/11
x = 99
21
Q

Find the percent of increase from 12 pencils to 18 pencils.

A

18 - 12 = 6

6/12 = 1/2 = 50%

22
Q

Find the percent of decrease from $500 to $400.

A

500 - 400 = 100

100/500 = 1/5 = 20%

23
Q

Round off $720.168 to the nearest cent.

A

$720.17

24
Q

write 6 3/5% as a decimal

A

.066 because 3/5% = .006, so add that to .06 of the 6%

25
Q

multiply 1526 by 100

A

152,600. When multiplying any number by 100 add two zeros. If a decimal, move the decimal two places to the right.

26
Q

T or F: In a proportion the product of the means should equal the product of the extremes.

A

true

27
Q

T or F: 7.38 is a mixed decimal

A

true

28
Q

T or F: 100% - 16% = 86%

A

false

29
Q

T or F: The ratio method can be used to find percentage.

A

true

30
Q

T or F: Percent means “hundredth”

A

true

31
Q

T or F: 9 7/8 % = .9875

A

false

32
Q

T or F: 10% of 200 is 20

A

true

33
Q

Mrs. Carmen made $250 for a 20-hour work week. Last week she began making 7% more. How much does she make now?

A

$250
x 1.07
———-
$267.50

34
Q

Donna bought 4 oranges for $.76. At the same rate what would 9 oranges cost?

A
4/9 = 76/x
4x = 684
x = 684/4
x = 171 = $1.71
35
Q

Terri bought a Sunday dress for $36. The sales tax was 6%. Find the total cost of the dress.

A

1.06 x 36 = $38.16