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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. SQRT 2 -401
125
225
0 (any fraction with 0 on top is 0)
49

2. Exponents - Dividing numbers with same base
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
343
512
One (1)

3. =13*19
70
64
64
247

4. =2^9
238
512
Pick the # that occurs most frequently
16

5. =8*16
70
128
112
50

6. =4^5
5
65
1 -024
Line up the decimal points and proceed as usual

7. When is a number divisible by 3?
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
48

8. =3^3
NO
27
512
1.732050808

9. =4*10
Pick the # that occurs most frequently
60
196
40

10. =11*17
3
220
64
187

11. =12*14
240
168
260
16

12. =7^3
Multiply the numerators and put the product over the product of the denominators
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
343
304

13. =13*18
9
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
270
234

14. =2^6
126
Base * Height
40
64

15. =3*17
49
Amount of increase/original amount = x/100 (Then cross multiply to find x)
51
216

16. =10^8
100 -000 -000
6
56
98

17. =12*16
30
153
192
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

18. =4*8
9
32
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
Even

19. SQRT 36
6
7
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

20. =4^1
360
108
120
4

21. =9*13
117
60
3
59 -049

22. how do you find the range of a set of numbers?
2 -401
Subtract the smallest number from the greatest number
It gets smaller
256

23. =10^2
36
55
100
340

24. =7*16
112
68
25
56

25. =6^3
36
216
240
234

26. Right Isosceles triangle (lengths)?
6
80
Side - Side - Side^2
16

27. Distance Formula?
Rate * Time = Distance (Hint: Draw a chart)
63
64
88

28. Area of a parallelogram?
152
125
Even
Base * Height

29. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
It gets smaller
162
Rate * Time = Distance (Hint: Draw a chart)
27

30. =8*17
136
Multiply the # of choices for each of the spots
162
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

31. =9*11
156
99
9
400

32. =12*13
27
156
(b*h)/2
1 -024

33. =7^4
90
2 -401
70
266

34. SQRT 49
46 -656
8
7
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

35. 0/1 =
270
56
0 (any fraction with 0 on top is 0)
4 -096

36. =17*17
1 -024
289
30
1 -000 -000

37. =6^3
320
220
52
216

38. 4/0 =
16
2
100
Undefined

39. =14*19
4 -096
91
10 -000 -000 -000
266

40. 729^(1/3)
9
It gets smaller
A+B (Add both probabilities)
Invert (reciprocal) the second fraction and multiply

41. =6*16
10
16
96
50

42. =3*11
Even
Subtract the smallest number from the greatest number
33
256

43. =13*14
(b*h)/2
182
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
210

44. =5*16
0 (any fraction with 0 on top is 0)
80
57
66

45. SQRT 256
1
4
16
100

46. 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)
10 -000
60
54

47. SQRT 121
256
8
11
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

48. =8*9
100 -000
77
72
64

49. =7^3
343
90
10 -000 -000
1 -024

50. =3*5
49
144
15
63