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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. =8*17
60
Multiply the # of choices for each of the spots
144
136

2. Equation for a line?
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
36
10 -000 -000 -000
3 -125

3. =6*11
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
70
126
66

4. When is a number divisible by 3?
256
42
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
Odd

5. =4*17
68
27
Will = 1 - Won't
4

6. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
NO
2pr
1 -024
255

7. =7*12
256
70
84
196

8. =3^4
224
81
90
280

9. =9*11
256
99
72
4

10. =12*18
119
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
216
512

11. =3*4
60
12
117
234

12. =8*16
10 -000 -000
128
Undefined
121

13. =3^6
729
247
80
255

14. =3*5
4
15
1 -000
136

15. =5*20
64
100
49
75

16. SQRT 4
(x-y)^2
2
4 -096
625

17. =12*16
192
119
Odd
81

18. =2^10
1 -024
1 -000 -000 -000
10
16

19. =5*16
80
360
100
It becomes positive

20. When is a number divisible by 6?
5
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
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)
1 -296

21. =8*8
169
512
64
220

22. =18*20
360
132
171
81

23. Another way to write cube root 5
5^(1/3)
Pr^2
125
95

24. even + even =
Even
It gets smaller
320
90

25. SQRT 10 -000 -000 -000
100 -000
90
9
361

26. 4/0 =
18
Undefined
64
42

27. Does x^6 - x^2 = x^4?
NO
102
342
12

28. Exponents - Dividing numbers with same base
169
10
4
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

29. =13*14
36
The direction of the inequality symbol changes
182
10 -000

30. =5*11
55
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
81
Won't = 1 - Will

31. SQRT 81
225
6
72
9

32. SQRT 3
320
1.732050808
144
133

33. =16*20
320
32
NO
198

34. =9*16
144
221
126
57

35. SQRT 169
16
75
204
13

36. =13*15
380
195
360
Rate * Time = Distance (Hint: Draw a chart)

37. Dividing Decimals
96
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
64

38. =3*6
7 -776
18
4 -096
32

39. =10^6
625
1 -000 -000
27
Pick the # that occurs most frequently

40. =6^3
100 -000 -000
75
216
45

41. =20*20
Will = 1 - Won't
Even
400
156

42. =6*18
108
13
25
343

43. If you raise a negative number to an odd power - what happens to the number?
It gets smaller
65
78
729

44. =7^4
323
95
16
2 -401

45. =5*8
9
40
112
Undefined

46. SQRT 1 -000 -000
4
1 -000
It becomes positive
27

47. Does x^2 + x^3 = x^5?
NO
117
9
100 -000

48. Key to percent increase/decrease
Amount of increase/original amount = x/100 (Then cross multiply to find x)
28
30
0 (any fraction with 0 on top is 0)

49. =3*17
8
36
6
51

50. SQRT 256
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
4 -096
16
119