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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. Exponents - Multiplying numbers with same base
Add their exponents (6^2 *6^3 = 6^5)
0 (any fraction with 0 on top is 0)
1
3:4:5 -- 5:12:13 -- 7:24:25

2. When is a number divisible by 6?
135
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)
Combinations don't care about the order of the problems
15

3. Another way to write cube root 5
x:x^(1/3):2x
100
255
5^(1/3)

4. =3*5
15
4
380
9

5. =6^4
8
1 -296
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
72

6. =7*19
323
625
133
Odd

7. What is the difference between a permutation or a combination?

8. =5*14
220
10
70
85

9. 512^(1/3)
50
8
The direction of the inequality symbol changes
256

10. =8^1
8
80
112
66

11. =11*15
5^(1/3)
165
210
Odd

12. =7*15
324
105
32
27

13. =16*18
1.414213562
729
60
288

14. =12*19
84
27
45
228

15. =7*10
70
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)
99
1 -296

16. =4^6
182
13
4 -096
It becomes positive

17. Right Isosceles triangle (lengths)?
216
Side - Side - Side^2
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
272

18. =6*20
56
3 -125
120
Base * Height

19. =9^5
70
Itself
59 -049
343

20. =8*9
72
100 -000 -000
68
126

21. =8*15
66
120
3 -125
288

22. =9*13
Difference in the y-coordinates over the difference in the x coodinates
117
3
280

23. =8*19
7
152
6
136

24. =7*16
4
112
16
104

25. =11*13
1 -024
NO
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
143

26. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
228
114
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
It gets smaller

27. =11*20
220
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
76
9

28. =3^3
Permutations ask for 'arraingements' Combinations ask for 'Groups'
192
48
27

29. =5*9
45
27
28
400

30. SQRT 729
64
27
96
49

31. =3*20
512
182
221
60

32. Any number to the 0 power is?
1 -000
135
One (1)
36

33. =5*6
Difference in the y-coordinates over the difference in the x coodinates
30
64
25

34. =10^8
216
70
180
100 -000 -000

35. =4^2
143
8
187
16

36. multiplying decimals
60
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
192
180

37. how do you find the range of a set of numbers?
7
35
Subtract the smallest number from the greatest number
360

38. =8*14
84
112
90
4 -096

39. =18*18
324
289
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
121

40. =10^6
Subtract the smallest number from the greatest number
Even
Add or subtract the numbers on top and keep the same denominator
1 -000 -000

41. =7^1
Will = 1 - Won't
7
13
91

42. Permutations: single source - order matters BUT only for a selection
176
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
Odd
216

43. SQRT 10 -000 -000 -000
280
Line up the decimal points and proceed as usual
4 -096
100 -000

44. =8*10
80
78
72
216

45. =13*14
90
5
153
182

46. 64^(1/3)
128
112
3
4

47. =1^3
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
30
1
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

48. =9*11
289
270
99
121

49. =3*16
112
224
48
10 -000 -000

50. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
x:x^(1/3):2x
729
NO
81