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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. =5^5
3 -125
288
128
4

2. =3^6
729
70
306
243

3. Another way to write cube root 5
91
625
5^(1/3)
85

4. =8*19
100
1.732050808
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)
152

5. =7*7
49
135
(x-y)^2
117

6. =9*15
28
135
7 -776
49

7. =6^3
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
108
64
216

8. SQRT 25
100 -000
81
30
5

9. =4^4
256
Number of outcomes you want/total number of possible outcomes
195
Combinations don't care about the order of the problems

10. =17*20
126
272
340
1 -296

11. 216^(1/3)
6
NO
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
Line up the decimal points and proceed as usual

12. SQRT 6 -561
44
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
81
204

13. =11*13
143
6
36
204

14. =9^5
Add or subtract the numbers on top and keep the same denominator
59 -049
10 -000 -000 -000
256

15. =8*16
72
128
70
48

16. SQRT 1 -296
27
36
1 -024
5

17. =10^5
255
240
100 -000
84

18. =2^3
50
306
8
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. =8*11
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
204
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
88

20. =9*10
90
25
39
45

21. Exponents - Multiplying numbers with same base
340
240
Add their exponents (6^2 *6^3 = 6^5)
4 -096

22. =10^9
A+B (Add both probabilities)
1 -000 -000 -000
32
289

23. =4^3
221
64
6
171

24. Order of operations
323
16
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

25. Area of a parallelogram?
Base * Height
625
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
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)

26. =4*15
187
51
1 -024
60

27. =3^5
180
1
243
48

28. =5*16
11
128
80
36

29. =3*9
260
270
27
Combinations don't care about the order of the problems

30. =13*15
195
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
95
7 -776

31. SQRT 49
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
27
7
210

32. Adding and Subtracting Decimals
256
152
7
Line up the decimal points and proceed as usual

33. =3*18
143
54
5^(1/3)
4

34. =16*16
216
256
1 -000 -000
165

35. If you raise a negative number to an even power - what happens to the number?
36
15
Number of outcomes you want/total number of possible outcomes
It becomes positive

36. =14*18
10 -000
252
Pick the # that occurs most frequently
68

37. Adding or subtracting fractions with the same denominator
39
168
153
Add or subtract the numbers on top and keep the same denominator

38. SQRT 2
Add their exponents (6^2 *6^3 = 6^5)
224
512
1.414213562

39. =4*11
144
224
56
44

40. Probability that A and B will both happen?
1 -000
3:4:5 -- 5:12:13 -- 7:24:25
49
A*B (Multiply both probabilities)

41. SQRT 64
95
272
8
55

42. =5*11
55
63
4
140

43. When is a number divisible by 6?
162
260
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
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)

44. =3*3
9
15
Even
100 -000

45. =16*17
48
112
66
272

46. =5*14
70
40
56
(x-y)^2

47. =9*20
81
85
5^(1/3)
180

48. =2^6
49
64
128
39

49. 343^(1/3)
4
154
7
45

50. =9^3
729
42
39
20