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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. =9*13
45
288
1 -296
117

2. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
NO
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
0 (any fraction with 0 on top is 0)
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

3. =13*19
28
247
16
36

4. =14*15
Subtract the smallest number from the greatest number
210
1.732050808
2 -401

5. =8*12
252
96
32
NO

6. Area of a circle?
343
Pr^2
266
243

7. Area of a parallelogram?
Base * Height
98
Itself
90

8. Adding and Subtracting Decimals
Line up the decimal points and proceed as usual
80
9
5

9. =4*13
It becomes positive
108
52
225

10. =12*14
9
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
208
168

11. =4*20
60
80
300
64

12. When is a number divisible by 4?

13. Factor x^2-2xy+y^2
(x-y)^2
1
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
100

14. =6^3
160
144
216
4

15. =15*19
285
2
25
NO

16. Permutations: single source - order matters BUT only for a selection
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
90
143
9

17. =9*15
135
2
240
48

18. =5*20
100
187
8
171

19. =10^1
112
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
10
4

20. =13*14
6
27
182
4

21. =5^2
1 -000 -000
25
133
208

22. =9^4
36
13
Invert (reciprocal) the second fraction and multiply
6 -561

23. =14*16
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
234
224
100

24. =12*20
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
240
1 -296
112

25. =8*17
136
20
64
84

26. =3^5
196
1.414213562
243
81

27. =9*17
56
153
729
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

28. multiplying decimals
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
9
512
133

29. SQRT 25
512
5
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
169

30. =6*17
102
1 -024
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
54

31. Any number to the 0 power is?
153
45
7
One (1)

32. Multiplying Fractions
Multiply the numerators and put the product over the product of the denominators
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
210
98

33. =4*17
0 (any fraction with 0 on top is 0)
20
165
68

34. =4*15
60
121
88
36

35. =7*8
56
60
180
63

36. =8^2
Permutations ask for 'arraingements' Combinations ask for 'Groups'
64
100
20

37. =5*6
30
121
343
98

38. =11*15
105
28
165
300

39. =11*14
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
11
225
154

40. 216^(1/3)
65
40
6
361

41. =8^3
Multiply the # of choices for each of the spots
10 -000 -000
512
100 -000

42. =4^5
3
1 -024
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

43. SQRT 100 -000 -000
6
42
It gets smaller
10 -000

44. =7*9
0 (any fraction with 0 on top is 0)
63
247
28

45. How do you find the slope of a line?
256
Difference in the y-coordinates over the difference in the x coodinates
9
96

46. =16*20
100
320
4 -096
108

47. =7^3
117
7
280
343

48. =3^6
27
729
112
95

49. =5*16
105
99
36
80

50. Circumference of a circle?
1 -000 -000
121
2pr
35