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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. =7*11
77
60
243
It gets smaller

2. =9^5
59 -049
46 -656
75
Multiply the numerators and put the product over the product of the denominators

3. =9*13
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
54
117
90

4. =5*12
68
90
238
60

5. 8^(1/3)
98
76
8
2

6. =18*20
4
It gets smaller
360
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

7. =11*14
5
13
81
154

8. =5^3
96
204
35
125

9. =7*17
Number of outcomes you want/total number of possible outcomes
119
30
Even

10. =4^2
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
60
16
10 -000

11. =9*11
36
306
255
99

12. =7*14
120
98
16
42

13. =4*19
76
27
342
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

14. =19*20
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
380
238
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

15. =8*9
128
6
266
72

16. =2^8
256
One (1)
171
125

17. =13*19
80
4
247
380

18. Adding or subtracting fractions with the same denominator
323
144
133
Add or subtract the numbers on top and keep the same denominator

19. =3*5
3:4:5 -- 5:12:13 -- 7:24:25
15
216
81

20. =12*20
240
Permutations ask for 'arraingements' Combinations ask for 'Groups'
2 -401
81

21. =3*16
48
16
64
25

22. =14*15
10 -000
NO
323
210

23. =5*14
380
136
91
70

24. =10^6
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
1 -000 -000
Number of outcomes you want/total number of possible outcomes
216

25. =11*13
216
100 -000
143
108

26. =6*8
48
143
Pick the # that occurs most frequently
36

27. Adding and Subtracting Decimals
117
Odd
Line up the decimal points and proceed as usual
192

28. =4*10
2 -401
40
285
128

29. =6^6
15
192
46 -656
Will = 1 - Won't

30. =3*13
400
39
169
135

31. Pythagorean Triples (lengths)?
168
3:4:5 -- 5:12:13 -- 7:24:25
36
143

32. =2^7
8
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)
128
56

33. Equation for a line?
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
44
70
512

34. =8*14
255
10 -000
65
112

35. =4*18
1 -024
72
Rate * Time = Distance (Hint: Draw a chart)
Won't = 1 - Will

36. =1^3
80
1
2
64

37. SQRT 6 -561
4
81
Even
56

38. 343^(1/3)
272
20
7
60

39. =7^2
126
182
10
49

40. Any number to the 0 power is?
247
42
125
One (1)

41. =6*7
40
729
30
42

42. =3*9
27
247
5
140

43. =5*19
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
27
209
95

44. =6^3
360
216
59 -049
144

45. =7*9
126
1 -024
63
11

46. =9*20
729
4
2
180

47. =6^4
72
28
220
1 -296

48. =2^6
64
Odd
Number of outcomes you want/total number of possible outcomes
153

49. =15*17
255
48
10 -000 -000
Even

50. =9^3
256
42
280
729