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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. =5*14
112
108
70
27

2. odd + odd =
Add their exponents (6^2 *6^3 = 6^5)
Even
154
128

3. Does x^6 - x^2 = x^4?
NO
45
Will = 1 - Won't
11

4. =10^9
144
90
1 -000 -000 -000
125

5. SQRT 2 -401
49
288
NO
1 -000

6. =16*17
3
272
225
Odd

7. =9^3
220
39
729
221

8. =6*20
44
120
Undefined
221

9. =12*12
102
144
24
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

10. =6^3
Number of outcomes you want/total number of possible outcomes
64
209
216

11. =4*20
8
255
160
80

12. =4*14
49
60
56
140

13. =4*10
60
40
70
225

14. =15*17
255
216
195
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

15. =12*14
10 -000
168
80
512

16. Order of operations
100 -000 -000
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
25
One (1)

17. =8^2
64
Rate * Time = Distance (Hint: Draw a chart)
135
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

18. Distance Formula?
Rate * Time = Distance (Hint: Draw a chart)
204
2
342

19. =5^4
36
121
16
625

20. =4^1
3 -125
4 -096
42
4

21. SQRT 6 -561
Undefined
272
81
210

22. =8*11
88
121
54
121

23. =8*15
15
255
340
120

24. =9*9
81
100
323
180

25. Area of a circle?
Pr^2
8
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
Add their exponents (6^2 *6^3 = 6^5)

26. =16*18
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
20
288
280

27. =13*14
0 (any fraction with 0 on top is 0)
182
27
125

28. =3*8
49
Base * Height
24
125

29. =15*16
6
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
240
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

30. =3*4
10
49
288
12

31. =2^3
7
8
128
152

32. =7*14
120
247
98
63

33. Adding and Subtracting Decimals
Line up the decimal points and proceed as usual
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
165
90

34. =4*15
126
72
60
320

35. When is a number divisible by 3?
27
11
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
9

36. SQRT 1 -024
95
32
198
27

37. SQRT 9
3
15
51
2 -401

38. =4*11
91
133
56
44

39. Dividing Fractions
Invert (reciprocal) the second fraction and multiply
75
33
32

40. =3*10
13
30
12
20

41. =13*18
98
8
3
234

42. =5*15
100
Combinations don't care about the order of the problems
24
75

43. Basic probability formula?
168
Number of outcomes you want/total number of possible outcomes
50
10

44. =4*19
Combinations don't care about the order of the problems
It gets smaller
76
Odd

45. =9*19
64
3 -125
729
171

46. =3*19
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
57
72
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

47. SQRT 400
57
24
96
20

48. =7*15
105
99
Invert (reciprocal) the second fraction and multiply
152

49. 0/1 =
0 (any fraction with 0 on top is 0)
256
126
10 -000

50. =7^4
2 -401
59 -049
100 -000
7 -776