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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. =2^2
4
8
240
0 (any fraction with 0 on top is 0)

2. SQRT 10 -000 -000 -000
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
72
100 -000
729

3. =14*20
280
45
10
300

4. SQRT 4 -096
3
108
64
12

5. =6^5
59 -049
36
121
7 -776

6. 4/0 =
16
Undefined
100
35

7. =2^4
Won't = 1 - Will
16
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
3:4:5 -- 5:12:13 -- 7:24:25

8. SQRT 400
Pick the # that occurs most frequently
180
285
20

9. =5*5
25
64
10
9

10. Order of operations
Will = 1 - Won't
The direction of the inequality symbol changes
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
343

11. =11*15
Even
165
209
60

12. Probability that A or B will happen?
84
4 -096
A+B (Add both probabilities)
0 (any fraction with 0 on top is 0)

13. 4/0 =
187
Undefined
9
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

14. =3^4
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
81
16
1 -024

15. =7*15
208
4
105
NO

16. Permutations: single source - order matters
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
160
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
60

17. =11*18
49
729
198
98

18. =5*15
75
125
68
60

19. =15^2
128
225
90
1 -000

20. =11*17
285
5
187
Even

21. =13*13
10
169
729
100

22. =16*16
256
24
7
120

23. =9^1
256
Even
9
266

24. SQRT 64
72
3 -125
A+B (Add both probabilities)
8

25. =11*19
4
209
156
Even

26. 0/1 =
0 (any fraction with 0 on top is 0)
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
66
It becomes positive

27. =8^4
117
4 -096
195
3 -125

28. =12*15
Even
180
It gets smaller
78

29. =5^2
1 -000
25
Odd
39

30. =3*19
1 -000 -000 -000
57
228
7

31. =16*19
52
1 -000
304
49

32. Adding or subtracting fractions with different denominators
56
112
40
Multiply both fractions to get a common denominator add or subtract as usual

33. =4*14
153
280
156
56

34. =9*16
35
36
144
18

35. Area of a circle?
100
Number of outcomes you want/total number of possible outcomes
Pr^2
NO

36. =9^2
121
Pick the # that occurs most frequently
33
81

37. =4^4
256
2 -401
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
343

38. =4^3
64
343
96
9

39. =15*15
225
1.732050808
192
25

40. Dividing Decimals
64
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
Multiply the numerators and put the product over the product of the denominators
340

41. =2^7
(b*h)/2
88
1
128

42. =6*13
255
272
It gets smaller
78

43. =10^5
100 -000
9
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
39

44. =3^6
512
72
112
729

45. odd + odd =
63
Even
114
117

46. =10^6
NO
(x-y)^2
7
1 -000 -000

47. =4*13
0 (any fraction with 0 on top is 0)
266
3
52

48. =7*18
126
60
64
4 -096

49. =12*19
228
340
60
204

50. =15*20
300
(x-y)^2
A+B (Add both probabilities)
63