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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. =3*13
39
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
11
7

2. =6*10
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
84
40
60

3. =7^3
343
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
68
238

4. =5*20
80
100
Undefined
The direction of the inequality symbol changes

5. =8*20
60
160
Invert (reciprocal) the second fraction and multiply
144

6. =4^3
52
4 -096
10 -000
64

7. =8*19
7
152
70
84

8. Adding and Subtracting Decimals
36
Line up the decimal points and proceed as usual
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
343

9. =9*13
66
117
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
1 -024

10. =4*15
6
75
60
Invert (reciprocal) the second fraction and multiply

11. even x even =
Even
27
One (1)
1.732050808

12. =8*18
10 -000
288
144
64

13. Permutations: single source - order matters BUT only for a selection
1 -296
3:4:5 -- 5:12:13 -- 7:24:25
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
204

14. =9*9
247
81
45
169

15. =6*8
48
77
98
90

16. When is a number divisible by 6?
289
27
9
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)

17. =8^3
90
48
196
512

18. Another way to write cube root 5
204
Base * Height
5^(1/3)
195

19. =11*16
64
15
Undefined
176

20. SQRT 3
1.732050808
342
3
15

21. =16*19
100 -000
42
304
0 (any fraction with 0 on top is 0)

22. =12*14
165
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
143
168

23. =3*6
(x-y)^2
18
99
228

24. =6*6
100 -000
1 -024
304
36

25. =10^4
Rate * Time = Distance (Hint: Draw a chart)
10 -000
40
192

26. 729^(1/3)
6
9
59 -049
2

27. =9*10
196
90
A+B (Add both probabilities)
266

28. =5*15
75
It gets smaller
99
98

29. =6*15
90
Add their exponents (6^2 *6^3 = 6^5)
2
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

30. =8*14
18
7
112
27

31. SQRT 1 -024
1 -024
165
96
32

32. =4*8
625
15
Undefined
32

33. =5*13
65
28
NO
64

34. How do you find the mode of a set of numbers?
Pick the # that occurs most frequently
3 -125
9
128

35. =17*18
35
Multiply the numerators and put the product over the product of the denominators
306
49

36. When is a number divisible by 6?
60
7 -776
176
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)

37. =12*20
Pick the # that occurs most frequently
3
100 -000
240

38. =4^5
105
33
1 -024
4

39. =18*20
289
360
204
Add their exponents (6^2 *6^3 = 6^5)

40. =4^1
4
9
221
60

41. =7*17
119
90
7
255

42. =2^6
63
108
70
64

43. =6^2
1 -000 -000 -000
36
198
40

44. =9^5
Undefined
10 -000
24
59 -049

45. =11^2
28
121
75
11

46. =5*8
40
168
32
48

47. =5*9
45
36
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
343

48. =13*17
64
221
10 -000
7

49. =10^5
168
100 -000
56
64

50. =14*17
182
A*B (Multiply both probabilities)
238
Multiply both fractions to get a common denominator add or subtract as usual