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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. 729^(1/3)
228
36
9
6

2. =4^6
216
27
4 -096
25

3. SQRT 49
Even
7
1 -296
10 -000

4. =13*16
9
304
323
208

5. =6^1
1 -000 -000
100 -000 -000
6
28

6. =6^6
25
81
100 -000
46 -656

7. Exponents - Raising a power to a power
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
76
180
Base * Height

8. =13*13
15
80
182
169

9. =8*14
24
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)
Add or subtract the numbers on top and keep the same denominator
112

10. =2^2
16
4
70
96

11. =3*15
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
36
45
9

12. =9^4
6 -561
1 -000
Base * Height
NO

13. =7*12
84
210
168
A+B (Add both probabilities)

14. 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)
27
729
96

15. =4*18
Multiply the # of choices for each of the spots
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
196
72

16. =13*20
70
361
48
260

17. 4/0 =
Undefined
63
105
10 -000 -000

18. =8*13
104
84
221
NO

19. =2^8
209
256
56
135

20. =7*15
Even
105
66
4 -096

21. =7*18
126
45
9
54

22. Exponents - Multiplying numbers with same base
176
A+B (Add both probabilities)
It gets smaller
Add their exponents (6^2 *6^3 = 6^5)

23. How do you find the mode of a set of numbers?
16
7
Pick the # that occurs most frequently
49

24. =9*14
63
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
135
126

25. =10^8
729
100 -000 -000
3
7

26. =6*15
306
Base * Height
90
64

27. Probability that A or B will happen?
A+B (Add both probabilities)
108
625
30

28. =5*6
40
1.414213562
35
30

29. Order of operations
Odd
90
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
300

30. SQRT 81
Multiply both fractions to get a common denominator add or subtract as usual
36
112
9

31. =2^3
36
8
45
221

32. =17*17
15
289
Base * Height
225

33. even + odd =
Odd
2
216
196

34. =4^4
40
256
306
50

35. =17*19
323
Even
252
2

36. Adding and Subtracting Decimals
153
Line up the decimal points and proceed as usual
7 -776
216

37. =3*8
56
112
24
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

38. =10^5
27
32
100 -000
84

39. =5*9
72
3:4:5 -- 5:12:13 -- 7:24:25
45
4

40. SQRT 225
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
15
NO
216

41. =12*17
128
216
1
204

42. =4*12
36
342
One (1)
48

43. Another way to write cube root 5
95
128
The direction of the inequality symbol changes
5^(1/3)

44. =7^1
7
85
16
18

45. =2^6
180
198
144
64

46. Pythagorean Triples (lengths)?
7
3:4:5 -- 5:12:13 -- 7:24:25
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
46 -656

47. Key to percent increase/decrease
96
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
125
Amount of increase/original amount = x/100 (Then cross multiply to find x)

48. =4*6
Add their exponents (6^2 *6^3 = 6^5)
NO
180
24

49. Area of a parallelogram?
1 -024
60
Base * Height
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

50. =19*20
380
60
225
1