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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. =9*13
117
28
125
A*B (Multiply both probabilities)

2. Circumference of a circle?
81
2pr
285
16

3. =17*18
224
Multiply both fractions to get a common denominator add or subtract as usual
64
306

4. =4^2
16
20
10 -000 -000 -000
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

5. =15*20
300
126
1
10 -000

6. =9^3
Even
4 -096
729
52

7. =13*20
49
160
260
70

8. When is a number divisible by 6?
1.414213562
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)
64
NO

9. =10^5
216
100 -000
76
6

10. =7*16
20
36
143
112

11. =9*15
323
180
135
285

12. =11*20
220
225
It gets smaller
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

13. odd + odd =
323
Even
2 -401
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

14. =2^9
512
9
16
195

15. =12*14
3:4:5 -- 5:12:13 -- 7:24:25
168
75
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

16. =9^5
15
13
90
59 -049

17. Multiplying Fractions
Multiply the numerators and put the product over the product of the denominators
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
260
32

18. Does x^6 - x^2 = x^4?
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
95
1.732050808
NO

19. =18*19
91
342
4
180

20. =1^3
225
1
11
64

21. =8*19
152
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
35
125

22. =4*17
68
2pr
28
16

23. Probability that A or B will happen?
144
143
A+B (Add both probabilities)
126

24. =8*20
4
59 -049
160
63

25. =5*14
66
3
70
Add or subtract the numbers on top and keep the same denominator

26. SQRT 4 -096
64
45
90
154

27. Exponents - Raising a power to a power
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
195
x:x^(1/3):2x
108

28. =8*18
59 -049
Will = 1 - Won't
64
144

29. If you raise a negative number to an even power - what happens to the number?
152
It becomes positive
Combinations don't care about the order of the problems
48

30. If you raise a negative number to an odd power - what happens to the number?
81
Odd
It gets smaller
84

31. SQRT 625
342
25
102
209

32. =3*4
12
Permutations ask for 'arraingements' Combinations ask for 'Groups'
6 -561
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

33. Right Isosceles triangle (lengths)?
5
64
125
Side - Side - Side^2

34. =4*8
126
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
187
32

35. =6*19
512
64
2
114

36. Dividing Decimals
7
182
80
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

37. =8*15
95
120
216
60

38. When is a number divisible by 4?

39. =12*18
221
216
4 -096
5^(1/3)

40. =3*16
48
32
154
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

41. SQRT 10 -000 -000 -000
10
144
Will = 1 - Won't
100 -000

42. =19*19
361
30
4
216

43. 30:60:90 Right Triangle (Lenghts)
10
238
x:x^(1/3):2x
78

44. =4*7
28
204
NO
NO

45. Pythagorean Triples (lengths)?
64
3:4:5 -- 5:12:13 -- 7:24:25
60
247

46. =2^2
56
4
Rate * Time = Distance (Hint: Draw a chart)
45

47. =7*9
171
(x-y)^2
63
56

48. Probability that A and B will both happen?
8
A*B (Multiply both probabilities)
36
Side - Side - Side^2

49. SQRT 1 -296
75
180
36
45

50. =3^5
NO
243
0 (any fraction with 0 on top is 0)
128