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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. =6*19
81
114
5
96

2. =8^4
100 -000
x:x^(1/3):2x
204
4 -096

3. =2^8
204
49
256
119

4. SQRT 121
210
51
221
11

5. =3^5
169
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
48
243

6. multiplying decimals
32
105
52
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

7. =18*20
1.732050808
360
121
256

8. =10^10
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
Multiply both fractions to get a common denominator add or subtract as usual
Add or subtract the numbers on top and keep the same denominator
10 -000 -000 -000

9. =13*13
1.732050808
25
16
169

10. When is a number divisible by 4?

11. =5*18
117
300
90
52

12. Dividing Fractions
25
Invert (reciprocal) the second fraction and multiply
204
729

13. =4*19
76
156
380
6

14. =9*17
625
260
153
220

15. =3^1
3
8
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
66

16. =12*20
240
40
125
NO

17. =15*15
225
72
7
180

18. SQRT 81
126
121
8
9

19. Any number to the first power is?
8
16
Itself
4

20. =4*17
225
68
7 -776
400

21. Permutations: single source - order matters BUT only for a selection
64
153
54
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

22. =5*15
28
204
152
75

23. How do you find the slope of a line?
56
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
Difference in the y-coordinates over the difference in the x coodinates
266

24. =5^5
126
3 -125
Even
300

25. =12*19
228
6 -561
100
60

26. =15*17
729
255
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
182

27. =8*17
343
136
54
Won't = 1 - Will

28. When is a number divisible by 6?
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)
75
117
Combinations don't care about the order of the problems

29. SQRT 9
Number of outcomes you want/total number of possible outcomes
132
3
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

30. =13*17
221
64
5^(1/3)
400

31. 0/1 =
0 (any fraction with 0 on top is 0)
243
99
27

32. =5*13
95
32
64
65

33. =8*13
25
72
8
104

34. SQRT 49
625
It gets smaller
11
7

35. When is a number divisible by 4?

36. 64^(1/3)
121
Invert (reciprocal) the second fraction and multiply
4
72

37. SQRT 16
42
4
100 -000
99

38. =6*9
176
128
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
54

39. 27^(1/3)
3
84
289
64

40. 4/0 =
Undefined
Even
343
4

41. =7*13
Undefined
91
30
Won't = 1 - Will

42. SQRT 4 -096
64
1 -024
152
2

43. =6*14
84
8
361
400

44. =3*15
361
45
10
320

45. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
154
16
It gets smaller
90

46. =7*20
140
25
343
3 -125

47. =3*14
Even
48
306
42

48. =11*14
18
Odd
5
154

49. =4*8
32
Even
3 -125
512

50. SQRT 6 -561
342
81
136
Invert (reciprocal) the second fraction and multiply