Decimals, Percents, Fractions Flashcards

1
Q

1/10

A

.1…10%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

2/10…1/5

A

.2 20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

3/10

A

.3 30%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

4/10

A

.4 40%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

5/10..1/2

A

.5 50%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

1/8

A

.125 12.5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

11/10

A

1.1…110%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

12/10…6/5

A

1.2….120%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

3/8

A

.375…37.5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

5/8

A

.625 62.5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

7/8

A

.875, 87.5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

10/8..5/4

A

1.25…125%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

3/2

A

1.5 10%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

62 divided by 10 to -2 power

A

6200

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

4,000000 x .0003

A

move decimal place four times to the right for to get 3 and move decimal place four places to the left to get 400
=400 x 3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

300/.05

A

move decimals in the same direction on the top and bottom 30000/5 = 6,000

17
Q

percent increase

A

To calculate the percentage increase: First: work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100. If your answer is a negative number then this is a percentage decrease.

18
Q

New percent ( as % of original value)

A

new value/original value= 230/200

19
Q

$230 is what percent more than $200

A

this is just like asking what the percent increase is = 40%

change in value/orginal value

20
Q

30 is what percent more than 20

A

asking you to find the increase from 20 to 30

21
Q

slope-intercept equation: y=mx + b

A

m= slope b=y

22
Q

The distance between two points in the coordinate plane can be calculated by using the pythagorean theorem.

A

Fore example: points (1, 3) (7,-5)
side of traingle= 8 and 6
8 squared + 6 squared = c suqared

23
Q

Draw the line represented by x-y=18

A

first rewrite the line in slope intercept form (y=x-18)
2nd fine the intercepts by setting x equal to 0 and y equal to 0.
- y=0-18 x=18
- (0,18) (18,0)

24
Q

of all the quadrilaterals with a given area, the square has the minimum perimeter

A

Of all quadrilaterals with a given perimeter the square has the largest area

25
diagnoa of a square = s square root 2
this is also the face diagnoal of a cube.
26
diagnoal of a cube can be found using this formula
d=s cubbed
27
if the rectangle above has a width of 6, and the ratio of thw width to the length is 3:4 what is the diagnol
3/4=6/x
28
deluxe pythagorean theorem
ddsquared=x squared + y squared + z squared | x, y and z are the sides of the rectangular solid and d is the main diagnol
29
one revolution ( spinning of wheel) = one full circumfrance
if the wheel has a diameter of 4 ft and travels 3 circumfrance per second then the point travels at a rate of 3 x 4 pie=12pie feet per second.
30
Circumfrence and arc length. what is the arc length of axb
first find the cirumfrance then find the fraction of the arc is of the circle
31
the boundaries of a sector of a circle are formed by the arc and two radius
add them to find perimeter of circle
32
two circles and a rectangle form a cylinder
area of a cylinder = 2(rsquared_ + 2r x h
33
two circles and a rectangle form a cylinder
area of a cylinder = 2(rsquared_ + 2r x h
34
find the equation of the line containing the points (5,-2) (3,4)
y=-3x+b solve for by ( they y intercepty, by plugging the coordinates of one point into the equation --4=-3(3)+b = b=13
35
If the coordinates of point A are (2,2) and the coordinates of point B are (0,-2) what is the equation of the perpendicular bisector of line segment AB
first find slope of AB = 2 next find the slope of perpendicular bisector of AB= -1/2 now you know the equation of the perpendicular bi sector has the following form y= -1/2x + b to find b find the point where the lines bisect then plug the coordinates of this point into the equation above
36
Parrlelel lines have equal slopes
Perpendicular lines have negative reciporical slopes