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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. =11*17
36
NO
187
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

2. =5*8
40
7
125
209

3. Dividing Fractions
117
729
Invert (reciprocal) the second fraction and multiply
60

4. Right Isosceles triangle (lengths)?
729
Side - Side - Side^2
210
Odd

5. =18*19
65
165
255
342

6. =4*11
44
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
32
100

7. SQRT 4 -096
126
27
64
85

8. =8*8
120
8
64
80

9. =14*18
252
240
209
10

10. =6*14
44
132
126
84

11. =6*13
78
39
18
10 -000

12. =8*20
160
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
Undefined
112

13. =12*20
1.414213562
6 -561
240
224

14. =3^1
117
3
32
125

15. =5*5
25
100
135
180

16. When is a number divisible by 4?

17. =6*12
72
20
1 -024
729

18. =5*17
24
85
209
33

19. =4*14
56
2 -401
Even
225

20. =3*6
126
4 -096
156
18

21. =12*15
55
180
NO
209

22. =17*20
340
224
380
133

23. Area of a circle?
24
9
1 -000
Pr^2

24. =6*15
11
90
16
7

25. =12*17
204
64
144
247

26. =8*17
66
108
136
54

27. Basic probability formula?
5
238
46 -656
Number of outcomes you want/total number of possible outcomes

28. =9*10
13
176
1 -024
90

29. =6^3
1 -024
216
165
8

30. =9^5
91
729
59 -049
65

31. =7*17
2
1 -000 -000 -000
119
60

32. =6^5
133
512
7 -776
2pr

33. When is a number divisible by 3?
119
136
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

34. =8^3
55
512
63
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

35. =6*9
54
1 -000
Line up the decimal points and proceed as usual
108

36. =5^1
133
5
66
120

37. odd x odd =
6
260
204
Odd

38. =15*16
132
It becomes positive
240
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

39. =5*11
125
55
64
120

40. SQRT 4
10 -000
0 (any fraction with 0 on top is 0)
2
285

41. how do you find the range of a set of numbers?
80
45
Subtract the smallest number from the greatest number
75

42. =16*18
60
121
288
2 -401

43. =13*19
64
225
247
216

44. =7*10
143
1 -024
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
70

45. Any number to the 0 power is?
It gets smaller
It gets smaller
176
One (1)

46. Circumference of a circle?
168
2pr
Odd
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)

47. Adding and Subtracting Decimals
72
33
Line up the decimal points and proceed as usual
343

48. =8*14
9
16
84
112

49. =5^3
125
4
25
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

50. =5*6
30
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
128
54