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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. =11*18
198
A*B (Multiply both probabilities)
260
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

2. Exponents - Dividing numbers with same base
70
60
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
7

3. SQRT 9
105
3
25
52

4. =14*18
252
5
64
216

5. =7*15
216
105
288
240

6. When is a number divisible by 3?
A*B (Multiply both probabilities)
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)
56

7. 729^(1/3)
100
28
1 -000
9

8. =15*18
270
128
27
Pr^2

9. =9*20
204
224
180
36

10. How do you tell if it's a permutation or combination?

11. =5*13
60
96
380
65

12. 216^(1/3)
Even
400
6
304

13. What happens if you multiply or divide both sides of an inequality by a negative number?
7
The direction of the inequality symbol changes
Subtract the smallest number from the greatest number
13

14. odd x odd =
Even
x:x^(1/3):2x
64
Odd

15. =3*3
285
1 -000 -000
112
9

16. =13*14
144
182
28
70

17. Right Isosceles triangle (lengths)?
52
57
Side - Side - Side^2
60

18. =3*4
Multiply the numerators and put the product over the product of the denominators
Will = 1 - Won't
12
One (1)

19. even x odd =
Even
36
76
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)

20. SQRT 2
2
30
1.414213562
16

21. =9*17
225
100
168
153

22. =10^4
10 -000
104
2 -401
70

23. =3^3
40
1 -000
27
32

24. =6*13
40
100 -000
0 (any fraction with 0 on top is 0)
78

25. =3^6
4
300
729
84

26. =5*8
60
40
1 -024
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

27. =2^7
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
128
15
625

28. =6^6
NO
(b*h)/2
144
46 -656

29. Another way to write cube root 5
50
304
100
5^(1/3)

30. =13*18
85
234
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)
54

31. =9*14
126
216
64
90

32. =3*13
Multiply the # of choices for each of the spots
121
5^(1/3)
39

33. =6*6
8
42
208
36

34. =3*5
15
66
65
209

35. =5*5
76
25
2
2 -401

36. Combinations: single source - order doesn't matter
136
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
96
10 -000 -000 -000

37. SQRT 625
Itself
18
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
25

38. Area of a parallelogram?
225
1 -000 -000
45
Base * Height

39. =4*7
80
28
Difference in the y-coordinates over the difference in the x coodinates
224

40. =8*14
60
112
108
323

41. SQRT 25
5
88
380
It gets smaller

42. even + even =
Even
Difference in the y-coordinates over the difference in the x coodinates
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
42

43. =2^10
1.732050808
1 -024
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
Base * Height

44. =2^6
30
64
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
216

45. =11*17
187
1 -296
70
A*B (Multiply both probabilities)

46. Distance Formula?
76
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
Rate * Time = Distance (Hint: Draw a chart)
64

47. =9^3
Combinations don't care about the order of the problems
380
729
Undefined

48. =8*13
512
84
104
16

49. Area of a circle?
30
Pr^2
90
60

50. =6*16
96
132
8
20