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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. 125^(1/3)
5
40
171
126

2. =8*17
136
25
4 -096
11

3. =10^9
136
98
1 -000 -000 -000
176

4. =5^4
Number of outcomes you want/total number of possible outcomes
625
1 -296
400

5. SQRT 1 -024
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
224
5^(1/3)
32

6. =8*9
Undefined
72
Undefined
Base * Height

7. =19*20
64
225
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
380

8. 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
625
216
35

9. 0/1 =
Won't = 1 - Will
45
0 (any fraction with 0 on top is 0)
216

10. =11*17
Multiply both fractions to get a common denominator add or subtract as usual
90
10
187

11. 4/0 =
Won't = 1 - Will
Undefined
102
243

12. =14*17
80
238
57
162

13. Combinations: single source - order doesn't matter
204
70
Number of outcomes you want/total number of possible outcomes
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

14. =6*13
A+B (Add both probabilities)
78
320
15

15. =8^3
512
56
112
90

16. =5*18
25
5^(1/3)
90
168

17. =3*12
120
36
114
48

18. 0/1 =
33
121
3
0 (any fraction with 0 on top is 0)

19. =9*14
10
126
9
56

20. =17*18
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
1 -296
306
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

21. =4*16
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
54
108
64

22. =6*17
102
104
60
9

23. =1^3
1
70
45
112

24. If you raise a negative number to an odd power - what happens to the number?
55
1.414213562
52
It gets smaller

25. =5*19
7
225
36
95

26. SQRT 9
343
10 -000 -000 -000
It gets smaller
3

27. =6^1
Add their exponents (6^2 *6^3 = 6^5)
72
6
56

28. =2^1
2
52
90
x:x^(1/3):2x

29. =7*7
204
256
Add or subtract the numbers on top and keep the same denominator
49

30. =12*14
40
216
168
180

31. =15*20
160
300
104
120

32. =3*8
24
36
121
Base * Height

33. =3^6
108
One (1)
729
272

34. =4*4
64
45
16
289

35. =3^3
95
40
324
27

36. =10^5
512
78
100 -000
10

37. =14*14
196
105
323
Side - Side - Side^2

38. =11*18
8
80
208
198

39. Exponents - Multiplying numbers with same base
234
75
Add their exponents (6^2 *6^3 = 6^5)
1 -024

40. =8*15
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
120
64
625

41. =15^2
16
225
323
289

42. =6*11
48
3
3
66

43. 30:60:90 Right Triangle (Lenghts)
126
Invert (reciprocal) the second fraction and multiply
64
x:x^(1/3):2x

44. =7*20
13
10 -000 -000 -000
18
140

45. Distance Formula?
16
342
Rate * Time = Distance (Hint: Draw a chart)
76

46. SQRT 729
27
(x-y)^2
100 -000
306

47. =4*11
56
60
44
121

48. Circumference of a circle?
NO
121
2pr
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

49. =11*15
165
16
304
243

50. Dividing Decimals
168
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
119
133