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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. =4*19
Pick the # that occurs most frequently
NO
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)
76

2. =2^8
81
240
100
256

3. When is a number divisible by 4?

4. =6*12
36
72
78
144

5. =3^5
243
10 -000
52
It becomes positive

6. =8*19
42
Multiply the numerators and put the product over the product of the denominators
152
84

7. =11*11
121
44
30
400

8. =4*11
2
NO
44
136

9. =13*19
3 -125
247
228
65

10. =2^5
32
153
46 -656
NO

11. =2^10
343
Add or subtract the numbers on top and keep the same denominator
24
1 -024

12. =15*18
270
96
36
343

13. =8*15
1 -296
120
80
25

14. =13*16
10 -000 -000
Line up the decimal points and proceed as usual
208
64

15. =3*10
6 -561
30
1 -000 -000
4 -096

16. =6^3
216
16
Multiply the numerators and put the product over the product of the denominators
320

17. =13*15
32
289
88
195

18. =8^1
323
121
5^(1/3)
8

19. SQRT 225
1.414213562
15
68
187

20. =6^1
56
Base * Height
84
6

21. =5*7
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
35
NO
144

22. How do you find the slope of a line?
10 -000
80
300
Difference in the y-coordinates over the difference in the x coodinates

23. =10^5
100 -000
11
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
90

24. =13*17
221
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
20
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

25. =12*15
180
18
171
60

26. =13*14
182
2
10
4 -096

27. even + odd =
24
3:4:5 -- 5:12:13 -- 7:24:25
Odd
30

28. =11*12
46 -656
It gets smaller
1 -024
132

29. Combinations: single source - order doesn't matter
90
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
(x-y)^2
80

30. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
16
Multiply the # of choices for each of the spots
400
2

31. How do you find the median of a set of numbers?
3
10 -000 -000
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
234

32. =4*13
7
52
54
204

33. SQRT 3
102
7 -776
36
1.732050808

34. =12*19
Amount of increase/original amount = x/100 (Then cross multiply to find x)
196
Even
228

35. =5*13
252
1.732050808
40
65

36. 64^(1/3)
1 -024
15
4
55

37. SQRT 81
9
140
400
16

38. =2^4
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
2pr
255
16

39. =9*17
153
59 -049
A+B (Add both probabilities)
Difference in the y-coordinates over the difference in the x coodinates

40. =19*19
55
240
361
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

41. SQRT 169
One (1)
192
13
247

42. How do you tell if it's a permutation or combination?

43. How do you find the mode of a set of numbers?
240
Pick the # that occurs most frequently
2
20

44. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
60
125
88
NO

45. even x even =
78
360
9
Even

46. =10^10
16
Rate * Time = Distance (Hint: Draw a chart)
128
10 -000 -000 -000

47. =6*15
128
625
380
90

48. =3*6
6
18
342
20

49. =7^3
343
80
112
Multiply the # of choices for each of the spots

50. =6*20
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
120
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
243