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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. odd x odd =
Odd
33
320
36

2. =5*9
45
54
72
91

3. =3*19
625
8
72
57

4. =4*6
60
28
210
24

5. =6^3
216
100
260
One (1)

6. Key to percent increase/decrease
140
100 -000 -000
272
Amount of increase/original amount = x/100 (Then cross multiply to find x)

7. =4*13
2
52
2
A+B (Add both probabilities)

8. =8*17
4 -096
0 (any fraction with 0 on top is 0)
136
35

9. =2^5
260
32
Even
153

10. =3*3
270
20
51
9

11. Odds that at least one thing will happen?
272
6 -561
3
Will = 1 - Won't

12. =7^4
60
320
2 -401
154

13. =4*20
4 -096
Even
80
27

14. 216^(1/3)
40
24
126
6

15. =6*7
27
216
16
42

16. =5*17
9
66
85
35

17. =11*18
198
224
15
NO

18. =8^3
512
Invert (reciprocal) the second fraction and multiply
112
342

19. =10^8
512
100 -000 -000
243
36

20. Exponents - Raising a power to a power
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
192
343
342

21. =6*15
90
240
7 -776
88

22. =10^7
18
49
1
10 -000 -000

23. how do you find the range of a set of numbers?
90
35
Subtract the smallest number from the greatest number
4

24. =11*11
121
99
24
1 -000

25. =7*16
128
112
5
196

26. =20^2
400
51
91
Pick the # that occurs most frequently

27. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
A*B (Multiply both probabilities)
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
NO
51

28. =11*14
154
Add or subtract the numbers on top and keep the same denominator
140
Odd

29. =3*16
380
48
32
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

30. Does x^6 - x^2 = x^4?
8
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)
168
NO

31. SQRT 4 -096
64
85
10 -000 -000 -000
100 -000 -000

32. =19*20
50
108
380
64

33. =7*10
36
100 -000 -000
Won't = 1 - Will
70

34. =11*19
204
209
Itself
54

35. multiplying decimals
Side - Side - Side^2
192
12
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

36. Odds that something doesn't happen?
Add their exponents (6^2 *6^3 = 6^5)
10 -000 -000
Won't = 1 - Will
59 -049

37. =4*18
90
65
176
72

38. Circumference of a circle?
81
39
2pr
220

39. =5^3
The direction of the inequality symbol changes
20
Multiply the numerators and put the product over the product of the denominators
125

40. =16*20
320
10 -000 -000 -000
Even
169

41. =10^1
7
56
238
10

42. =10^9
It gets smaller
1 -000 -000 -000
12
8

43. When is a number divisible by 6?
119
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)
152
0 (any fraction with 0 on top is 0)

44. =5*13
36
120
78
65

45. =17*20
27
100 -000
340
3

46. What happens if you multiply or divide both sides of an inequality by a negative number?
8
Even
The direction of the inequality symbol changes
360

47. How do you find the mode of a set of numbers?
10
135
Pick the # that occurs most frequently
66

48. =5*19
Rate * Time = Distance (Hint: Draw a chart)
95
10
6

49. =15^2
400
4
225
4 -096

50. SQRT 100 -000 -000
162
360
25
10 -000

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