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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. =20^2
270
400
625
240

2. =8*8
64
128
154
5

3. =7*8
56
Multiply both fractions to get a common denominator add or subtract as usual
Invert (reciprocal) the second fraction and multiply
2

4. Permutations: single source - order matters BUT only for a selection
114
2
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

5. Circumference of a circle?
343
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
32
2pr

6. SQRT 169
1 -000
13
132
Multiply the # of choices for each of the spots

7. =3*15
27
15
6
45

8. Any number to the negative power (y) is equal to?
30
48
209
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

9. =16*18
288
The direction of the inequality symbol changes
59 -049
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

10. SQRT 81
625
285
9
140

11. =4*8
91
32
It gets smaller
49

12. =7*16
112
It gets smaller
133
729

13. =3^1
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
3
77
144

14. =5^3
125
A+B (Add both probabilities)
48
It becomes positive

15. Probability that A or B will happen?
70
102
A+B (Add both probabilities)
304

16. =14*20
3
9
280
6

17. =5^2
36
25
4
65

18. =12*13
156
Even
27
10

19. =5^4
It gets smaller
625
255
60

20. =10^4
88
Odd
9
10 -000

21. =5^1
Itself
5
24
95

22. SQRT 121
6 -561
144
729
11

23. =8*20
70
160
72
144

24. =9^3
It gets smaller
9
165
729

25. =3^3
4
224
45
27

26. SQRT 400
256
3 -125
20
27

27. =8^1
220
105
8
16

28. =2^7
100 -000
5^(1/3)
40
128

29. =7^2
1
4
400
49

30. even + even =
512
3
Even
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

31. =10^1
1 -000 -000 -000
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
10
117

32. =3*19
57
(x-y)^2
198
A*B (Multiply both probabilities)

33. =13*14
182
289
5
209

34. Combinations: single source - order doesn't matter
NO
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
65
1 -000 -000 -000

35. =9^1
10
27
9
182

36. Does x^6 - x^2 = x^4?
8
625
240
NO

37. 27^(1/3)
224
3
238
Even

38. =6*7
361
240
42
300

39. =6*9
65
54
247
108

40. =12*14
1 -000
132
225
168

41. =11*12
4
224
196
132

42. Area of a circle?
143
Itself
Pr^2
49

43. =13*17
221
27
136
1 -000

44. =11*18
285
198
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
4

45. =5^5
3 -125
144
210
30

46. =15*19
285
165
143
Rate * Time = Distance (Hint: Draw a chart)

47. odd + odd =
99
2
Even
13

48. =2^4
63
8
343
16

49. SQRT 10 -000 -000 -000
100 -000
1
33
5^(1/3)

50. =3*18
209
54
380
81