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GMAT Math Memorization

Subjects : gmat, math

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. =4*15
27
16
60
4

2. SQRT 400
A+B (Add both probabilities)
Combinations don't care about the order of the problems
20
27

3. =12*12
54
117
144
If it is divisible by both 2 and 3 (318 is because it is even and the sum of 3+1+8 is divisible by 3)

4. =10^7
10 -000 -000
49
112
20

5. =4*16
323
48
5
64

6. =5*12
Subtract the smallest number from the greatest number
60
225
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

7. =5*8
32
40
Odd
36

8. SQRT 2 -401
70
306
3
49

9. =4^3
64
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
100
143

10. When is a number divisible by 6?
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
If it is divisible by both 2 and 3 (318 is because it is even and the sum of 3+1+8 is divisible by 3)
70
7

11. Does x^6 - x^2 = x^4?
0 (any fraction with 0 on top is 0)
NO
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
72

12. =8*14
198
112
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
Multiply both fractions to get a common denominator add or subtract as usual

13. SQRT 256
16
39
12
216

14. Exponents - Dividing numbers with same base
NO
72
4
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

15. =8*10
63
49
240
80

16. Probability that A or B will happen?
51
512
A+B (Add both probabilities)
100

17. =16*19
Undefined
Side - Side - Side^2
16
304

18. =13*13
187
169
Even
Won't = 1 - Will

19. SQRT 64
196
100 -000 -000
8
126

20. What is the difference between a permutation or a combination?

21. =3*11
33
One (1)
10 -000
119

22. =5*5
25
220
1 -000
64

23. =4*12
48
If it is divisible by both 2 and 3 (318 is because it is even and the sum of 3+1+8 is divisible by 3)
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
59 -049

24. =3*13
1 -024
51
39
196

25. =9^3
64
The direction of the inequality symbol changes
729
15

26. =8^2
75
512
280
64

27. =5^5
10 -000 -000
3 -125
324
114

28. =3*8
24
59 -049
96
40

29. 512^(1/3)
77
32
8
35

30. =5*19
95
180
Base * Height
90

31. =9*15
112
135
238
44

32. =17*20
340
Amount of increase/original amount = x/100 (Then cross multiply to find x)
361
10

33. Adding and Subtracting Decimals
2pr
Line up the decimal points and proceed as usual
49
54

34. =6*17
102
28
343
45

35. SQRT 121
1.732050808
36
11
64

36. =11*12
11
132
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
10 -000

37. =15^2
99
NO
225
165

38. =4*17
Won't = 1 - Will
10 -000 -000
1 -296
68

39. =8*12
96
56
112
11

40. =3^4
169
52
91
81

41. =6^1
16
100
6
100 -000 -000

42. =6^5
84
216
9
7 -776

43. =5*14
140
Won't = 1 - Will
70
32

44. =17*18
306
Won't = 1 - Will
512
39

45. =3*4
36
210
400
12

46. =3*9
Even
1
59 -049
27

47. =7*8
56
(x-y)^2
266
(b*h)/2

48. =4^3
64
y=mx+b where b is the y-intercept (the point which crosses the y-axis) m is the slope of the line - and x & y are the coordinates of some point on that line
72
24

49. =6*11
15
729
66
Add or subtract the numbers on top and keep the same denominator

50. How do you tell if it's a permutation or combination?