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):
1

726.1
13.74
+692.83
--------------

1432.67

2

13.6
- 9.783
-----------

3.817

3

.004
x .06
--------

.00024

4

.855
x34.7
------------

29.6685

5

1.827 divided by .87

2.1

6

5 divided by 6 round to nearest hundredth

.83

7

42% of $76

.42 x 76 = $31.92

8

6 3/4% of 800

.0675 x 800 = 54

9

36 is what percent of 60?

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

10

453% of 30

4.53 x 30 = 135.9

11

4/5 as a percent is

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

12

.75 as a percent is

75%

13

.675 as a percent is

67.5%

14

5/8 as a percent is

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

15

1/4 as percent is

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

16

Round off .736 to the nearest tenth.

.7

17

Write the consequent in the ratio 6:19

19

18

reduce the ratio 8/12 to lowest terms

2/3

19

write the greater: .513 or .5129

.513

20

complete the proportion: 9/11 = x/121

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

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

18 - 12 = 6
6/12 = 1/2 = 50%

22

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

500 - 400 = 100
100/500 = 1/5 = 20%

23

Round off $720.168 to the nearest cent.

$720.17

24

write 6 3/5% as a decimal

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

25

multiply 1526 by 100

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

26

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

true

27

T or F: 7.38 is a mixed decimal

true

28

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

false

29

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

true

30

T or F: Percent means "hundredth"

true

31

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

false

32

T or F: 10% of 200 is 20

true

33

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

$250
x 1.07
----------
$267.50

34

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

4/9 = 76/x
4x = 684
x = 684/4
x = 171 = $1.71

35

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

1.06 x 36 = $38.16