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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. SQRT 4
1 -024
2
136
36

2. =14*15
210
4
A*B (Multiply both probabilities)
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

3. even + odd =
5
Odd
72
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

4. =8*20
1
100
160
204

5. =5*18
Multiply the # of choices for each of the spots
90
57
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)

6. =6*14
90
NO
98
84

7. SQRT 225
117
9
15
289

8. =3^5
198
361
243
Won't = 1 - Will

9. =2^8
90
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
1 -000
256

10. =9*20
59 -049
100 -000
180
729

11. SQRT 49
80
10 -000 -000 -000
7
15

12. Circumference of a circle?
2pr
210
234
225

13. =6*13
1
180
80
78

14. Does x^2 + x^3 = x^5?
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)
50
56

15. =10^4
Permutations ask for 'arraingements' Combinations ask for 'Groups'
104
59 -049
10 -000

16. Combinations: single source - order doesn't matter
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
Amount of increase/original amount = x/100 (Then cross multiply to find x)
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
260

17. =4*15
3
25
11
60

18. =8^2
54
NO
16
64

19. If you raise a negative number to an even power - what happens to the number?
112
10
208
It becomes positive

20. 4/0 =
16
Undefined
Won't = 1 - Will
64

21. SQRT 1 -000 -000
1 -000
154
9
100

22. =3*14
42
52
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

23. =15^2
225
143
256
210

24. =8*12
A+B (Add both probabilities)
96
52
9

25. =13*15
Side - Side - Side^2
195
5
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

26. =13*16
46 -656
121
208
5

27. =7*9
99
Won't = 1 - Will
63
66

28. =15*18
256
270
126
225

29. =14*19
266
NO
36
126

30. Distance Formula?
81
Rate * Time = Distance (Hint: Draw a chart)
9
100

31. SQRT 625
Undefined
2pr
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
25

32. =4*6
The direction of the inequality symbol changes
51
90
24

33. =12*19
228
Line up the decimal points and proceed as usual
117
68

34. =13*14
Pick the # that occurs most frequently
182
Odd
NO

35. odd + odd =
Combinations don't care about the order of the problems
100 -000 -000
323
Even

36. =2^5
40
1.732050808
3:4:5 -- 5:12:13 -- 7:24:25
32

37. SQRT 1 -296
27
187
36
28

38. =7*18
72
56
126
Subtract the smallest number from the greatest number

39. 512^(1/3)
112
48
8
340

40. =5^5
343
3 -125
153
57

41. =9^4
6 -561
Even
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
100

42. =2^3
625
729
(b*h)/2
8

43. 30:60:90 Right Triangle (Lenghts)
8
x:x^(1/3):2x
120
27

44. =4^3
216
208
64
125

45. =5*11
25
180
15
55

46. =12*17
204
100 -000
625
270

47. =16*17
32
272
70
15

48. =10^3
1 -000
46 -656
252
100

49. =5*10
50
220
304
121

50. =12*12
144
88
Base * Height
225