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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. =3*3
45
60
44
9

2. =6*9
The direction of the inequality symbol changes
13
220
54

3. Adding or subtracting fractions with different denominators
8
225
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
Multiply both fractions to get a common denominator add or subtract as usual

4. =5*15
98
6 -561
75
72

5. 30:60:90 Right Triangle (Lenghts)
x:x^(1/3):2x
102
108
144

6. =8*13
44
104
100
70

7. When is a number divisible by 6?
Add their exponents (6^2 *6^3 = 6^5)
144
30
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)

8. =2^9
512
195
Itself
24

9. =8^1
60
247
Number of outcomes you want/total number of possible outcomes
8

10. =6*17
342
169
121
102

11. =12*19
16
8
228
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

12. =7*19
133
Undefined
361
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

13. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
144
25
Multiply the # of choices for each of the spots
144

14. =5^4
96
Difference in the y-coordinates over the difference in the x coodinates
625
66

15. =4*5
20
187
36
40

16. Exponents - Raising a power to a power
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
266
64
Undefined

17. =11*14
154
96
One (1)
117

18. 343^(1/3)
105
10 -000
NO
7

19. Multiplying Fractions
6
Multiply the numerators and put the product over the product of the denominators
One (1)
2pr

20. How do you tell if it's a permutation or combination?

21. =14*15
210
512
121
20

22. SQRT 3
6
28
48
1.732050808

23. =11*20
220
102
342
320

24. =5^2
2
25
1 -024
136

25. =3^3
1
240
27
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

26. Any number to the 0 power is?
1 -024
Even
625
One (1)

27. =5*14
81
512
625
70

28. =5*20
51
323
NO
100

29. Area of a circle?
9
40
Pr^2
255

30. =6*13
Multiply the numerators and put the product over the product of the denominators
33
78
152

31. If you raise a negative number to an even power - what happens to the number?
4 -096
It becomes positive
144
9

32. =9^4
20
60
729
6 -561

33. Exponents - Multiplying numbers with same base
1.414213562
Add their exponents (6^2 *6^3 = 6^5)
3
7 -776

34. =2^2
2
70
1 -000
4

35. SQRT 1 -296
36
180
152
3

36. =10^7
10 -000 -000
60
Multiply the # of choices for each of the spots
Itself

37. =7*18
400
Undefined
126
4 -096

38. =2^7
1 -024
Multiply the numerators and put the product over the product of the denominators
128
Even

39. =5^3
204
126
99
125

40. Circumference of a circle?
2pr
2
9
625

41. =5*13
65
33
729
2

42. =8*10
8
80
7 -776
16

43. =10^5
100 -000
3 -125
Subtract the smallest number from the greatest number
Line up the decimal points and proceed as usual

44. =16*20
8
125
320
Itself

45. =7^4
2 -401
100 -000
20
208

46. =3*5
46 -656
209
Rate * Time = Distance (Hint: Draw a chart)
15

47. =4^5
81
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
1 -024
1 -000 -000 -000

48. 64^(1/3)
4
400
144
Even

49. Dividing Decimals
25
192
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
59 -049

50. =15*18
84
6
154
270