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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. =9^3
Base * Height
25
40
729

2. =5*10
400
24
196
50

3. =7^3
2
64
343
90

4. =3^5
243
165
1.732050808
76

5. When is a number divisible by 6?
27
85
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)
25

6. even x odd =
88
Even
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
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)

7. =5^3
Pick the # that occurs most frequently
156
Ignor decimal points and multiply the two numbers - then count the digits to the right of the decimal points in the original numbers and place the decimal so there are the same number of digits to the right of the decimal
125

8. =2^8
256
36
323
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

9. =2^1
2
72
81
169

10. If you raise a negative number to an even power - what happens to the number?
90
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
4
It becomes positive

11. =3*17
225
51
81
198

12. Dividing Decimals
Multiply the # of choices for each of the spots
7
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
(b*h)/2

13. =8^2
64
216
32
7

14. How do you find the slope of a line?
Difference in the y-coordinates over the difference in the x coodinates
361
243
256

15. =3*11
100 -000
33
9
50

16. SQRT 4 -096
18
1.732050808
64
100

17. Area of a circle?
Pr^2
3
Even
8

18. =18*18
324
6 -561
304
28

19. =10^9
36
1 -000 -000 -000
105
128

20. =6*14
Will = 1 - Won't
81
153
84

21. =5*15
75
60
5
64

22. SQRT 2
45
240
225
1.414213562

23. =12*16
1 -000 -000 -000
192
1.732050808
512

24. Probability that A and B will both happen?
A*B (Multiply both probabilities)
Amount of increase/original amount = x/100 (Then cross multiply to find x)
100
40

25. Another way to write cube root 5
84
5^(1/3)
Undefined
56

26. =7*16
112
70
256
49

27. Any number to the 0 power is?
36
One (1)
8
266

28. Exponents - Multiplying numbers with same base
Add their exponents (6^2 *6^3 = 6^5)
99
324
64

29. Does x^6 - x^2 = x^4?
153
NO
102
78

30. When is a number divisible by 4?

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31. =15*15
1 -296
225
252
120

32. =3^6
18
152
729
102

33. =6^6
46 -656
42
40
117

34. When is a number divisible by 4?

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35. =19*20
64
176
A+B (Add both probabilities)
380

36. Dividing Fractions
380
64
Invert (reciprocal) the second fraction and multiply
40

37. =5*19
1 -296
27
54
95

38. odd + odd =
Even
10
100
1

39. =4^4
625
1 -296
256
76

40. =8*8
7
Pr^2
64
6 -561

41. =3*5
15
1 -024
36
125

42. Distance Formula?
90
280
400
Rate * Time = Distance (Hint: Draw a chart)

43. =3^3
27
16
133
323

44. =8*20
It becomes positive
100 -000
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
160

45. Order of operations
1 -000 -000
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
48
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

46. SQRT 4
NO
2
32
0 (any fraction with 0 on top is 0)

47. 343^(1/3)
243
40
144
7

48. =3^3
12
90
A*B (Multiply both probabilities)
27

49. =2^4
12
16
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
The direction of the inequality symbol changes

50. even x even =
4
216
270
Even