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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. =5^2
126
3
25
729

2. =3^5
7
4
162
243

3. =16*20
114
Add or subtract the numbers on top and keep the same denominator
Won't = 1 - Will
320

4. =17*18
380
85
306
77

5. =7*11
77
343
6
Pick the # that occurs most frequently

6. Area of a circle?
8
68
Pr^2
The direction of the inequality symbol changes

7. SQRT 625
343
Subtract the smallest number from the greatest number
25
7 -776

8. =9*13
171
85
84
117

9. =5*17
85
60
270
Won't = 1 - Will

10. =9*18
8
143
60
162

11. =2^10
8
1.732050808
1 -024
24

12. =8*13
Amount of increase/original amount = x/100 (Then cross multiply to find x)
104
Undefined
50

13. =6*15
90
1.414213562
(x-y)^2
95

14. =2^5
9
32
225
125

15. When is a number divisible by 6?
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)
Number of outcomes you want/total number of possible outcomes
46 -656
135

16. Dividing Decimals
104
285
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
54

17. =9*14
266
80
100 -000
126

18. =15*19
256
64
285
81

19. =5*12
60
48
(x-y)^2
3

20. =4^3
18
56
64
91

21. =6^1
7
32
6
1.414213562

22. =9*9
36
49
81
216

23. =15*16
A+B (Add both probabilities)
x:x^(1/3):2x
90
240

24. =4*13
20
Line up the decimal points and proceed as usual
The direction of the inequality symbol changes
52

25. =7*9
2pr
63
228
28

26. =8^1
Add their exponents (6^2 *6^3 = 6^5)
10 -000
3
8

27. =8*10
64
80
NO
24

28. =4*9
2
36
Won't = 1 - Will
NO

29. Key to percent increase/decrease
54
3 -125
225
Amount of increase/original amount = x/100 (Then cross multiply to find x)

30. =8*18
160
144
512
272

31. SQRT 3
1.732050808
Side - Side - Side^2
729
108

32. =14*15
49
84
3
210

33. =11*13
3
729
180
143

34. Probability that A and B will both happen?
A*B (Multiply both probabilities)
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
80
729

35. =8*19
Combinations don't care about the order of the problems
5
209
152

36. =12*18
252
204
216
9

37. =6*19
165
3 -125
114
340

38. =2^7
154
9
128
Amount of increase/original amount = x/100 (Then cross multiply to find x)

39. =6*7
76
42
90
36

40. =6*9
Invert (reciprocal) the second fraction and multiply
72
54
9

41. =17*20
The direction of the inequality symbol changes
340
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
63

42. SQRT 100
260
Line up the decimal points and proceed as usual
10
154

43. =9*15
11
180
135
Ignor decimal points and multiply the two numbers - then count the digits to the right of the decimal points in the original numbers and place the decimal so there are the same number of digits to the right of the decimal

44. SQRT 9
121
Amount of increase/original amount = x/100 (Then cross multiply to find x)
324
3

45. =5^4
119
625
50
88

46. Right Isosceles triangle (lengths)?
133
187
Side - Side - Side^2
70

47. SQRT 81
0 (any fraction with 0 on top is 0)
9
Multiply the numerators and put the product over the product of the denominators
6

48. Odds that at least one thing will happen?
Will = 1 - Won't
15
Invert (reciprocal) the second fraction and multiply
8

49. SQRT 121
132
40
11
84

50. =8*11
96
171
88
36

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