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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. =10^1
Will = 1 - Won't
112
10
Even

2. SQRT 169
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
108
13
55

3. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
Difference in the y-coordinates over the difference in the x coodinates
Multiply the # of choices for each of the spots
100
224

4. =9*13
7 -776
125
0 (any fraction with 0 on top is 0)
117

5. =6*8
64
NO
48
7 -776

6. =3^3
16
27
Difference in the y-coordinates over the difference in the x coodinates
90

7. =14*16
340
225
224
27

8. =15^2
343
625
0 (any fraction with 0 on top is 0)
225

9. =18*18
324
225
136
33

10. =7*12
45
300
126
84

11. =9*15
100
4
1 -000 -000
135

12. =6^3
216
100 -000
25
400

13. =14*17
6 -561
238
512
40

14. When is a number divisible by 3?
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
27
125
204

15. =8*19
240
64
152
48

16. When is a number divisible by 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)
100
243
1 -024

17. =4^3
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
64
4
8

18. 30:60:90 Right Triangle (Lenghts)
x:x^(1/3):2x
20
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)

19. Order of operations
126
1.732050808
144
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

20. =3*12
306
20
10 -000
36

21. 27^(1/3)
3
255
112
9

22. =3*19
(x-y)^2
57
0 (any fraction with 0 on top is 0)
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

23. =4^4
256
625
7
50

24. =4*11
44
16
100 -000 -000
114

25. Exponents - Raising a power to a power
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
180
Odd
234

26. SQRT 1 -024
90
Line up the decimal points and proceed as usual
32
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)

27. =11*11
10
1 -000 -000
256
121

28. Adding and Subtracting Decimals
1 -296
100
Line up the decimal points and proceed as usual
2

29. =9*9
51
One (1)
625
81

30. =16*16
256
512
Will = 1 - Won't
10

31. =5^4
x:x^(1/3):2x
361
625
60

32. =4^3
156
4 -096
Odd
64

33. =1^3
Amount of increase/original amount = x/100 (Then cross multiply to find x)
96
117
1

34. =5^5
323
360
65
3 -125

35. SQRT 2 -401
49
Odd
Add their exponents (6^2 *6^3 = 6^5)
63

36. =10^4
Even
Odd
It gets smaller
10 -000

37. =8*18
256
153
144
204

38. =14*18
50
252
3
729

39. Any number to the 0 power is?
Rate * Time = Distance (Hint: Draw a chart)
400
70
One (1)

40. Exponents - Dividing numbers with same base
6 -561
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
136
66

41. SQRT 81
Even
152
9
24

42. =14*14
196
59 -049
76
63

43. SQRT 36
343
6
0 (any fraction with 0 on top is 0)
144

44. =11*14
288
380
49
154

45. SQRT 4
2
1 -000 -000 -000
76
Undefined

46. =8^2
3
64
1.732050808
729

47. =3*6
18
NO
46 -656
266

48. SQRT 400
68
20
One (1)
400

49. SQRT 729
27
60
133
119

50. 8^(1/3)
117
2
4
49