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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. =17*17
125
64
48
289

2. =9^5
64
54
Even
59 -049

3. Dividing Fractions
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
24
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
Invert (reciprocal) the second fraction and multiply

4. =7*19
1 -024
133
36
A+B (Add both probabilities)

5. Basic probability formula?
36
30
Number of outcomes you want/total number of possible outcomes
240

6. =8*14
112
256
5
80

7. =6^2
176
36
Multiply both fractions to get a common denominator add or subtract as usual
70

8. =15*19
Difference in the y-coordinates over the difference in the x coodinates
247
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
285

9. =5^2
90
512
64
25

10. SQRT 2
1 -000 -000
1.414213562
128
Undefined

11. =5*13
228
65
100
57

12. =6*9
54
16
120
56

13. =2^5
10 -000 -000 -000
32
Undefined
11

14. =3*15
6
324
45
2

15. When is a number divisible by 3?
156
0 (any fraction with 0 on top is 0)
49
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

16. =2^2
40
285
4
144

17. =4*14
A+B (Add both probabilities)
260
56
323

18. =8^1
8
512
228
70

19. =14*19
32
266
60
70

20. When is a number divisible by 6?
361
196
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)
320

21. Area of a circle?
56
256
84
Pr^2

22. =5^5
225
30
90
3 -125

23. =8^4
Odd
4 -096
1 -000 -000 -000
400

24. =13*19
45
1.732050808
247
221

25. Any number to the first power is?
Itself
64
84
36

26. Probability that A and B will both happen?
400
6
91
A*B (Multiply both probabilities)

27. =9^3
729
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)
0 (any fraction with 0 on top is 0)
182

28. =18*20
360
380
4
68

29. =3*13
119
80
39
91

30. even + even =
Even
Add their exponents (6^2 *6^3 = 6^5)
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
84

31. SQRT 10 -000
72
72
100
3

32. =12*18
120
4
55
216

33. =8*10
5
10 -000 -000 -000
80
15

34. even x even =
266
Even
220
240

35. =12*13
40
98
289
156

36. =10^6
1 -000 -000
One (1)
512
45

37. =4*9
400
24
36
1 -024

38. =5^3
125
10 -000 -000 -000
33
66

39. =11*16
40
39
176
133

40. =12*15
2
195
180
225

41. Dividing Decimals
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
(x-y)^2
NO
20

42. =18*19
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
400
342
6 -561

43. =15*20
160
64
143
300

44. =5*15
75
171
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
72

45. =9^1
20
33
9
64

46. Pythagorean Triples (lengths)?
72
125
3:4:5 -- 5:12:13 -- 7:24:25
40

47. SQRT 10 -000 -000 -000
64
18
323
100 -000

48. =14*14
196
105
Multiply the # of choices for each of the spots
8

49. =14*15
Multiply both fractions to get a common denominator add or subtract as usual
49
210
135

50. =4*13
3 -125
6
52
152