Test your basic knowledge |

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. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
2
NO
(b*h)/2
160

2. Probability that A or B will happen?
A+B (Add both probabilities)
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
1 -296
256

3. odd + odd =
55
Add or subtract the numbers on top and keep the same denominator
Even
20

4. =14*14
10
48
196
266

5. 512^(1/3)
76
8
Even
3

6. Permutations: single source - order matters BUT only for a selection
It gets smaller
42
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
NO

7. =2^1
2
35
1 -024
323

8. =4*4
102
195
16
It becomes positive

9. =5*14
It gets smaller
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
70
180

10. =5*11
8
20
55
343

11. How do you find the slope of a line?
27
1.414213562
1 -024
Difference in the y-coordinates over the difference in the x coodinates

12. =9*14
176
60
126
(b*h)/2

13. SQRT 25
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
Even
5
Multiply the # of choices for each of the spots

14. =4*18
72
306
76
9

15. =13*18
66
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
90
234

16. =4^1
4
Add or subtract the numbers on top and keep the same denominator
306
60

17. =7*10
32
70
400
1 -000

18. =17*19
80
49
323
7 -776

19. =25^2
NO
Rate * Time = Distance (Hint: Draw a chart)
625
10

20. =5*8
84
A+B (Add both probabilities)
40
154

21. SQRT 625
25
30
156
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

22. =9*17
56
153
135
361

23. =7*19
256
Line up the decimal points and proceed as usual
324
133

24. Key to percent increase/decrease
Will = 1 - Won't
266
Amount of increase/original amount = x/100 (Then cross multiply to find x)
3

25. Probability that A and B will both happen?
A*B (Multiply both probabilities)
Even
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
80

26. =11*17
187
72
Multiply the # of choices for each of the spots
100

27. =12*15
180
60
340
The direction of the inequality symbol changes

28. =5*16
255
80
27
Line up the decimal points and proceed as usual

29. SQRT 169
13
323
75
48

30. SQRT 2
72
343
1.414213562
64

31. =7*11
Odd
72
42
77

32. =4*9
36
256
Number of outcomes you want/total number of possible outcomes
198

33. =5*20
100
27
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
121

34. =16*20
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)
32
117
320

35. 343^(1/3)
6
512
7
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

36. =11*20
225
4 -096
220
60

37. SQRT 121
243
729
11
4 -096

38. =18*18
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
98
6 -561
324

39. =6*11
125
1 -000
66
98

40. SQRT 225
171
36
15
60

41. =15*16
140
221
240
343

42. 0/1 =
0 (any fraction with 0 on top is 0)
8
45
66

43. =9*12
195
A*B (Multiply both probabilities)
6
108

44. =4*11
8
44
6
Multiply the numerators and put the product over the product of the denominators

45. =9^5
168
59 -049
7 -776
42

46. =4^4
256
10 -000
76
Multiply the numerators and put the product over the product of the denominators

47. 8^(1/3)
45
100 -000 -000
78
2

48. =7^3
1 -000 -000 -000
343
289
100 -000

49. =8*18
154
10 -000 -000 -000
144
Multiply the # of choices for each of the spots

50. Dividing Decimals
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
7 -776
4 -096
Move the decimal to the right on both numbers until there is nothing to the right of the decimal