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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. =2^3
243
54
NO
8

2. =4^4
48
256
84
27

3. =6*18
108
7
64
100 -000

4. =7*18
192
Number of outcomes you want/total number of possible outcomes
126
252

5. If you raise a negative number to an even power - what happens to the number?
4
It becomes positive
1 -024
729

6. =8^4
28
3
Even
4 -096

7. =2^8
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
Number of outcomes you want/total number of possible outcomes
323
256

8. =3^3
4 -096
27
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

9. =2^5
32
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
187
1 -296

10. Adding or subtracting fractions with different denominators
Multiply both fractions to get a common denominator add or subtract as usual
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)
Subtract the smallest number from the greatest number
81

11. =6^3
Line up the decimal points and proceed as usual
340
216
36

12. =3*4
12
136
The direction of the inequality symbol changes
64

13. =4^6
4 -096
285
154
7

14. Distance Formula?
1
342
64
Rate * Time = Distance (Hint: Draw a chart)

15. =3*6
18
108
5
80

16. Any number to the 0 power is?
96
35
8
One (1)

17. SQRT 16
121
1 -296
4
16

18. =11*17
187
96
144
Line up the decimal points and proceed as usual

19. Does x^6 - x^2 = x^4?
NO
64
7 -776
204

20. When is a number divisible by 6?
25
132
300
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)

21. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
NO
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)
45

22. 343^(1/3)
280
7
1 -000
24

23. Combinations: single source - order doesn't matter
240
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
285
Even

24. =9*12
Multiply both fractions to get a common denominator add or subtract as usual
204
108
64

25. =11^2
36
255
121
46 -656

26. =7*13
It becomes positive
Pr^2
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
91

27. =9^3
729
108
20
289

28. =4*20
1
1 -000
80
90

29. Area of a triangle?
Side - Side - Side^2
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
171
(b*h)/2

30. even x odd =
70
Even
Permutations ask for 'arraingements' Combinations ask for 'Groups'
512

31. Factor x^2-2xy+y^2
Difference in the y-coordinates over the difference in the x coodinates
144
(x-y)^2
16

32. =3*13
36
39
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)
24

33. Adding and Subtracting Decimals
361
6
NO
Line up the decimal points and proceed as usual

34. =6^2
108
Subtract the smallest number from the greatest number
168
36

35. =2^2
4
72
Base * Height
48

36. =6*13
78
Even
192
125

37. 4/0 =
54
112
Undefined
Add their exponents (6^2 *6^3 = 6^5)

38. =15*17
8
76
255
Will = 1 - Won't

39. =6^3
68
216
360
2

40. =8*10
1
3
Itself
80

41. =4^3
3:4:5 -- 5:12:13 -- 7:24:25
64
100
270

42. =10^4
6
Number of outcomes you want/total number of possible outcomes
10 -000
8

43. =11*13
1.414213562
143
9
59 -049

44. SQRT 4 -096
64
204
Base * Height
27

45. =6^1
243
221
120
6

46. =7^4
2 -401
0 (any fraction with 0 on top is 0)
133
160

47. =15*16
59 -049
144
240
306

48. 0/1 =
289
204
225
0 (any fraction with 0 on top is 0)

49. What happens if you multiply or divide both sides of an inequality by a negative number?
50
The direction of the inequality symbol changes
36
32

50. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
It gets smaller
30
143
51