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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. =2^6
64
44
256
45

2. =4*17
225
68
270
81

3. Equation for a line?
84
81
40
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

4. Adding and Subtracting Decimals
Multiply the numerators and put the product over the product of the denominators
Line up the decimal points and proceed as usual
36
343

5. =11*20
2 -401
220
512
162

6. SQRT 169
100 -000
45
60
13

7. =8*15
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)
216
120
128

8. =14*20
Line up the decimal points and proceed as usual
7 -776
121
280

9. =13*14
39
182
NO
40

10. =4*14
9
187
169
56

11. =3*14
195
42
117
48

12. =6*17
13
102
90
Subtract the smallest number from the greatest number

13. =7*12
0 (any fraction with 0 on top is 0)
64
84
176

14. odd x odd =
208
380
Odd
80

15. What is the difference between a permutation or a combination?

16. SQRT 4 -096
5^(1/3)
4 -096
64
81

17. SQRT 2
1.414213562
24
81
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

18. =12*17
204
3 -125
42
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

19. =9^1
Add their exponents (6^2 *6^3 = 6^5)
64
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
9

20. =4^3
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
64
243
90

21. =7*9
64
63
625
10

22. =4*19
76
80
12
57

23. 125^(1/3)
48
70
5
0 (any fraction with 0 on top is 0)

24. =6*8
10 -000
Odd
48
42

25. =15*18
270
361
Add their exponents (6^2 *6^3 = 6^5)
1 -296

26. =13*16
48
195
208
56

27. SQRT 81
126
5
204
9

28. odd + odd =
80
9
Even
33

29. =7*10
512
255
70
144

30. =10^1
117
10
154
320

31. =7*14
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
98
8
Multiply the numerators and put the product over the product of the denominators

32. =4*8
Pick the # that occurs most frequently
32
256
135

33. =3*6
204
3 -125
7
18

34. =18*20
360
5
48
64

35. =6*13
80
78
Side - Side - Side^2
49

36. If you raise a negative number to an even power - what happens to the number?
60
It becomes positive
88
1 -000

37. =8*12
5^(1/3)
24
96
NO

38. =1^3
59 -049
1
209
60

39. =10^3
77
70
4
1 -000

40. =19*20
140
120
380
108

41. =4*15
165
204
60
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

42. =3^2
247
9
The direction of the inequality symbol changes
(x-y)^2

43. How do you find the mode of a set of numbers?
Multiply the # of choices for each of the spots
Pick the # that occurs most frequently
120
Even

44. =8^3
18
56
80
512

45. Circumference of a circle?
44
2pr
(x-y)^2
1 -000 -000

46. Does x^2 + x^3 = x^5?
84
225
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)
NO

47. =11*17
30
91
187
64

48. =8^1
126
8
25
32

49. =13*17
81
221
Invert (reciprocal) the second fraction and multiply
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

50. =12*14
13
48
168
99