Test your basic knowledge |

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. 0/1 =
272
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
0 (any fraction with 0 on top is 0)

2. =5*19
95
1
81
54

3. =3^3
64
27
243
8

4. =3*17
90
49
51
126

5. =3*19
1.414213562
57
256
280

6. =14*17
32
30
238
112

7. =7*16
54
102
112
64

8. Pythagorean Triples (lengths)?
256
121
3:4:5 -- 5:12:13 -- 7:24:25
120

9. =13*19
247
Multiply both fractions to get a common denominator add or subtract as usual
1 -024
342

10. SQRT 64
Even
8
90
44

11. =2^3
2
84
8
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

12. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
Multiply the # of choices for each of the spots
105
195
Line up the decimal points and proceed as usual

13. =9^4
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
25
(b*h)/2
6 -561

14. Probability that A and B will both happen?
70
A*B (Multiply both probabilities)
3 -125
Combinations don't care about the order of the problems

15. =7*18
16
126
1 -000
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

16. odd x odd =
42
192
Odd
44

17. =10^3
1 -000
3:4:5 -- 5:12:13 -- 7:24:25
512
Multiply the numerators and put the product over the product of the denominators

18. =6^4
120
136
96
1 -296

19. =5^5
3 -125
4
9
216

20. =5*7
35
108
240
64

21. SQRT 1 -024
32
64
70
Even

22. How do you find the median of a set of numbers?
1 -000
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
64

23. =8*19
Add their exponents (6^2 *6^3 = 6^5)
(x-y)^2
152
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

24. odd + odd =
40
133
Even
10

25. =8^3
6
64
5
512

26. =5*10
228
50
1 -024
80

27. =12*13
6
156
247
187

28. =3*11
56
13
8
33

29. =12*18
216
192
76
114

30. =3*14
One (1)
169
42
128

31. =7^1
132
7
65
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

32. =3*4
12
45
100 -000
361

33. =11*16
280
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
176
4

34. =9*13
81
117
247
6 -561

35. When is a number divisible by 3?
Undefined
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
4
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

36. =8*11
88
Multiply both fractions to get a common denominator add or subtract as usual
One (1)
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

37. =12*16
27
Side - Side - Side^2
192
70

38. Dividing Fractions
30
162
Invert (reciprocal) the second fraction and multiply
Permutations ask for 'arraingements' Combinations ask for 'Groups'

39. =15*18
270
64
Number of outcomes you want/total number of possible outcomes
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

40. =8*12
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
96
78
2

41. =11*17
187
240
20
25

42. =2^1
6
81
2
10 -000

43. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
It gets smaller
204
224
360

44. SQRT 256
1.414213562
72
36
16

45. Odds that at least one thing will happen?

46. =5*6
36
30
300
66

47. =4*10
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
40
49
Odd

48. SQRT 9
Even
NO
10 -000
3

49. =7*10
198
70
65
75

50. =11*15
125
Base * Height
64
165