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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. =9*13
Line up the decimal points and proceed as usual
72
49
117

2. =9*11
It gets smaller
6
729
99

3. =7*13
324
90
56
91

4. 343^(1/3)
It gets smaller
80
64
7

5. =3*3
8
100 -000
9
Add or subtract the numbers on top and keep the same denominator

6. SQRT 4
64
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)
2
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. =14*16
24
75
27
224

8. SQRT 49
125
100 -000
7
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

9. =5*17
85
8
165
It gets smaller

10. =5*6
512
30
102
6

11. =6*6
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
95
36
Undefined

12. When is a number divisible by 6?
27
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)
12
125

13. Multiplying Fractions
59 -049
Even
57
Multiply the numerators and put the product over the product of the denominators

14. =10^10
0 (any fraction with 0 on top is 0)
306
10 -000 -000 -000
It gets smaller

15. how do you find the range of a set of numbers?
Subtract the smallest number from the greatest number
28
108
234

16. =9*15
135
6
46 -656
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

17. =11^2
72
90
8
121

18. =5*12
132
72
108
60

19. SQRT 169
324
52
13
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)

20. =10^9
240
60
198
1 -000 -000 -000

21. =5*14
168
70
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
169

22. SQRT 4 -096
64
32
306
13

23. =13*15
361
133
195
1 -024

24. =13*18
234
133
4 -096
4

25. =9*19
6
256
171
Add or subtract the numbers on top and keep the same denominator

26. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^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
119
Multiply both fractions to get a common denominator add or subtract as usual
NO

27. =9*10
729
68
90
48

28. =6*15
64
9
3 -125
90

29. =8*15
36
120
(x-y)^2
256

30. =8*11
81
88
33
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

31. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
288
Multiply the # of choices for each of the spots
160
25

32. =5*10
50
104
56
156

33. Another way to write cube root 5
91
5^(1/3)
64
64

34. =15^2
119
1 -024
90
225

35. =16*18
114
288
198
36

36. Basic probability formula?
50
0 (any fraction with 0 on top is 0)
64
Number of outcomes you want/total number of possible outcomes

37. If you raise a negative number to an odd power - what happens to the number?
Odd
10 -000
3
It gets smaller

38. =10^6
16
13
1 -000 -000
285

39. =8^2
36
216
It gets smaller
64

40. =8^3
512
25
272
320

41. =1^3
100 -000
1
39
Itself

42. =4*9
36
16
16
5

43. =17*18
2
144
306
3

44. When is a number divisible by 4?

45. =6^3
72
360
Rate * Time = Distance (Hint: Draw a chart)
216

46. =2^6
171
156
64
11

47. =3*18
40
225
125
54

48. SQRT 729
4
Will = 1 - Won't
27
117

49. =5*18
Multiply the numerators and put the product over the product of the denominators
98
625
90

50. =12*14
168
Multiply both fractions to get a common denominator add or subtract as usual
209
27