GMAT Practice Deck Flashcards
(89 cards)
1
Q
2^1
A
2
2
Q
2^2
A
4
3
Q
2^3
A
8
4
Q
2^4
A
16
5
Q
2^5
A
32
6
Q
2^6
A
64
7
Q
2^7
A
128
8
Q
2^8
A
256
9
Q
2^9
A
512
10
Q
3^2
A
9
11
Q
3^3
A
27
12
Q
3^4
A
81
13
Q
4^2
A
16
14
Q
4^3
A
64
15
Q
4^4
A
256
16
Q
5^2
A
25
17
Q
5^3
A
125
18
Q
5^4
A
625
19
Q
6^2
A
36
20
Q
6^3
A
216
21
Q
7^2
A
49
22
Q
7^3
A
343
23
Q
8^2
A
64
24
Q
8^3
A
512
25
9^2
81
26
9^3
729
27
√2
1.4
28
√3
1.7
29
√5
2.2
30
1^3
1
31
5^3
125
32
8^3
512
33
2^3
8
34
3^3
27
35
4^3
64
36
6^3
216
37
9^3
729
38
7^3
343
39
10^3
1000
40
Find 41^2
Use the closest know square. 40^2 = 1600, 41^2=40^2 (1600) + 40 + 41 = 1681
41
Pick 4 single digit #s, use +, -, x, and / to produce all #s from 1-20, using each number only once.
ex. 2,3,4,5 (3-2)x(5-4) = 1
42
If A x B = 0, what must be true?
One of the factors must be zero (zero product property)
43
Use mental math, 56-19=?
Add one to both (57-20) = 37
44
Simply .56/.0007
800 (move decimals to simplify)
45
How do you make equivalent fractions
Multiply both by the same #, ex. (3/8) x (4/4) = 12/32. 3/8=12/32
46
1/3 (convert to decimal)
.333
47
2/3 (convert to decimal)
.666
48
1/5 (convert to decimal)
.2
49
2/5 (convert to decimal)
.4 (1/5 x 1/5 or .2 x .2)
50
3/5 (convert to decimal)
.6
51
4/5 (convert to decimal)
.8
52
1/6 (convert to decimal)
.1666
53
5/6 (convert to decimal)
.8333
54
1/7 (convert to decimal)
.143
55
1/8 (convert to decimal)
.125
56
3/8 (convert to decimal)
.375
57
5/8 (convert to decimal)
.625
58
7/8 (convert to decimal)
.875
59
1/9 (convert to decimal)
.1111 (anything divided by 9 is the divisor repeating)
60
7/9 (convert to decimal)
.777 (anything divided by 9 is the divisor repeating)
61
1/10 (convert to decimal)
.1
62
1/100 (convert to decimal)
.01
63
1/1000 (convert to decimal)
.001
64
1/20 (convert to decimal)
.05 (multiply numerator and denominator by 5 to see the connection or (1/2)x(1/10) = .5 x 10^-1
65
1/40 (convert to decimal)
.025 (.25 x 10^-1)
66
1/600 (convert to decimal)
.001666 (1/6 x 1/100 or .1666 x 10^-2)
67
True or False? a+b/c = a/c + b/c
True! Can split up the numerator with + or -
68
True or False? a/b-c = a/b + a/c
False. Can't split up denominator with + or -
69
Word Problems: 'is' means
equals
70
Word Problems: 'of' means
multiply
71
√121
11
72
√144
12
73
√169
13
74
√196
14
75
√225
15
76
Volume of a cube
s^3
77
Surface area of a cube
6s^2 (edge length=s, accounts for all six faces)
78
Volume of a rectangular solid
h x w x d
79
Surface area of a rectangular solid
2hw x 2hd x 2dw
80
Face diagonal of rectangular solid
Use Pythagorean theorem, must have all right angles. Look for Pythagorean triplets!
81
Space diagonal of rectangular solid
AD^2 = AB^2 + BC^2 + BC^2 (3D version of Pythagorean theorem, AD= diagonal)
82
Space diagonal of a cube
√3s (√3 times the edge length)
83
Volume of a cylinder
(think base x height, circle base = pie r^2)
=pie r^2 x h
84
Surface area of a cylinder
Area of two circular bases + area of rectangle
=2 pie r^2 + 2 pie r h
85
Total sales or revenue =
unit price x quantity sold
86
Profit =
revenue - cost
87
Translate ' A is 1/2 the size of B'
A=1/2B
88
Distance =
Rate x Time
89
Work=
Rate x Time
