GMAT Math Memorization

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. Any number to the first power is?
54
Add their exponents (6^2 *6^3 = 6^5)
102
Itself


2. even x even =
88
81
168
Even


3. SQRT 121
625
11
126
300


4. =2^7
It gets smaller
128
Won't = 1 - Will
120


5. Exponents - Raising a power to a power
119
27
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
255


6. =4*19
76
48
84
60


7. Key to percent increase/decrease
Amount of increase/original amount = x/100 (Then cross multiply to find x)
25
80
144


8. =6^3
204
260
A+B (Add both probabilities)
216


9. =10^10
10 -000 -000 -000
3
One (1)
10 -000


10. =11*15
64
Multiply both fractions to get a common denominator add or subtract as usual
54
165


11. =16*18
121
165
288
7


12. =5*12
343
1.732050808
10 -000
60


13. =4*17
512
68
182
81


14. =6*16
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
36
96
126


15. how do you find the range of a set of numbers?
Subtract the smallest number from the greatest number
210
1.732050808
2


16. =4*11
44
30
280
36


17. =6^2
64
Pick the # that occurs most frequently
(b*h)/2
36


18. =7*17
119
343
80
2


19. =13*17
Combinations don't care about the order of the problems
102
10
221


20. 64^(1/3)
625
32
126
4


21. =8^3
91
156
512
152


22. =8*20
99
160
168
Add or subtract the numbers on top and keep the same denominator


23. Does x^2 + x^3 = x^5?
171
NO
10 -000 -000
54


24. =6^1
6
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)
112
Itself


25. =4*7
28
121
It gets smaller
162


26. =5*8
20
64
40
256


27. =5*11
A*B (Multiply both probabilities)
The direction of the inequality symbol changes
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
55


28. =15*19
80
216
4 -096
285


29. When is a number divisible by 4?


30. =13*19
28
10
63
247


31. SQRT 729
171
27
343
280


32. =11*17
27
187
96
0 (any fraction with 0 on top is 0)


33. SQRT 1 -296
88
Line up the decimal points and proceed as usual
36
196


34. =8*17
68
136
8
1.414213562


35. =9*11
Odd
300
99
56


36. Adding or subtracting fractions with the same denominator
112
Add or subtract the numbers on top and keep the same denominator
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
Even


37. SQRT 16
4
Even
48
126


38. =6*15
90
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
162
240


39. =5*5
25
77
10
78


40. =14*17
225
5
40
238


41. =5*10
625
15
50
160


42. 729^(1/3)
112
10 -000 -000 -000
27
9


43. =2^5
32
81
400
112


44. =12*16
192
108
4 -096
102


45. =16*17
36
128
8
272


46. =6^6
46 -656
81
49
7


47. =3^4
30
729
81
59 -049


48. 125^(1/3)
5
216
140
154


49. =13*16
208
3
64
272


50. =7*13
64
96
91
228