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. Dividing Decimals
729
36
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
51

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

3. Exponents - Dividing numbers with same base
2 -401
It gets smaller
11
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

4. SQRT 49
400
100
7
304

5. =11*12
304
52
132
81

6. =6^3
Base * Height
(x-y)^2
216
208

7. Equation for a line?
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
64
Even
342

8. =16*19
72
304
3
400

9. =4*7
64
104
28
Number of outcomes you want/total number of possible outcomes

10. =13*14
238
182
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
54

11. =6^5
165
266
112
7 -776

12. =3*5
360
Multiply the # of choices for each of the spots
112
15

13. =4^1
224
9
20
4

14. =8*16
77
128
8
4

15. =6*14
84
112
Even
154

16. =4*16
84
90
729
64

17. =3*15
Odd
60
45
54

18. 216^(1/3)
81
64
36
6

19. =8^4
It gets smaller
30
NO
4 -096

20. When is a number divisible by 4?

21. 343^(1/3)
40
7
88
128

22. =13*15
48
27
195
10 -000

23. =8*12
44
169
96
225

24. =2^10
Pr^2
120
1 -024
100 -000

25. =9*10
90
156
10 -000 -000
40

26. =9^1
36
256
96
9

27. =15*15
85
144
225
9

28. Factor x^2-2xy+y^2
10 -000
Multiply both fractions to get a common denominator add or subtract as usual
7
(x-y)^2

29. how do you find the range of a set of numbers?
240
Subtract the smallest number from the greatest number
16
320

30. Circumference of a circle?
140
2pr
15
143

31. =12*12
90
144
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
81

32. =3*4
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)
12
216
9

33. =19*20
380
64
90
144

34. =17*18
11
361
20
306

35. Key to percent increase/decrease
Amount of increase/original amount = x/100 (Then cross multiply to find x)
55
2pr
108

36. =6^3
7
144
216
Undefined

37. =6*20
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)
42
50
120

38. SQRT 36
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
121
2
6

39. =5*14
240
60
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)
70

40. =9^3
108
729
133
16

41. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
60
64
96
NO

42. =7^3
228
x:x^(1/3):2x
343
2

43. =9*20
Multiply both fractions to get a common denominator add or subtract as usual
180
216
165

44. =18*18
Multiply both fractions to get a common denominator add or subtract as usual
324
81
125

45. Permutations: single source - order matters BUT only for a selection
16
54
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
342

46. =8*14
221
112
238
15

47. =2^7
25
128
9
100 -000 -000

48. =6*16
68
10 -000
40
96

49. =12*15
20
144
85
180

50. =15*20
300
8
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
6 -561