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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. =14*17
32
90
238
216

2. =5*17
24
729
85
8

3. =7*9
63
10
120
133

4. =17*17
72
90
252
289

5. even + odd =
156
100
Odd
It becomes positive

6. =7*16
165
Itself
240
112

7. SQRT 6 -561
90
Itself
221
81

8. =6*11
95
25
66
285

9. =5*20
66
152
323
100

10. Does x^2 + x^3 = x^5?
120
625
NO
64

11. Odds that something doesn't happen?

12. =13*17
16
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
221
171

13. =9^3
48
121
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
729

14. When is a number divisible by 4?

15. =4*20
2
112
72
80

16. =7*14
180
98
144
216

17. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
The direction of the inequality symbol changes
3:4:5 -- 5:12:13 -- 7:24:25
280
It gets smaller

18. =6^3
108
56
216
3:4:5 -- 5:12:13 -- 7:24:25

19. Adding and Subtracting Decimals
221
Itself
Line up the decimal points and proceed as usual
180

20. multiplying decimals
50
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
1 -296
136

21. Right Isosceles triangle (lengths)?
64
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
24
Side - Side - Side^2

22. SQRT 256
6
0 (any fraction with 0 on top is 0)
3
16

23. =10^1
10
54
729
289

24. =4*5
2
160
20
Pick the # that occurs most frequently

25. =6*9
45
153
196
54

26. =4^1
56
45
Subtract the smallest number from the greatest number
4

27. Circumference of a circle?
195
120
1 -024
2pr

28. =15*17
255
90
3
Line up the decimal points and proceed as usual

29. Dividing Fractions
64
238
Invert (reciprocal) the second fraction and multiply
180

30. SQRT 81
NO
9
90
Undefined

31. =6*15
2
90
36
143

32. =13*13
105
343
Subtract the smallest number from the greatest number
169

33. Permutations: single source - order matters
162
40
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
208

34. SQRT 4 -096
64
40
4 -096
Won't = 1 - Will

35. =9*13
117
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
28
72

36. =8*17
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
136
216
Invert (reciprocal) the second fraction and multiply

37. =7*19
64
48
24
133

38. =16*18
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
154
288
85

39. =13*14
400
182
108
78

40. =7^2
49
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)
243
125

41. Exponents - Raising a power to a power
90
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
Multiply the numerators and put the product over the product of the denominators
1

42. =5^1
5
120
Combinations don't care about the order of the problems
48

43. Area of a triangle?
Even
1.414213562
54
(b*h)/2

44. =5*16
238
78
80
306

45. Dividing Decimals
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
361
54
16

46. 64^(1/3)
4
306
108
360

47. =11^2
121
(b*h)/2
132
Combinations don't care about the order of the problems

48. =5*9
24
165
45
Base * Height

49. =19*20
It gets smaller
Won't = 1 - Will
625
380

50. =18*20
108
360
20
27