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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. =4^1
4
7 -776
It gets smaller
Permutations ask for 'arraingements' Combinations ask for 'Groups'

2. SQRT 121
27
221
11
27

3. even + odd =
7
75
Odd
It gets smaller

4. SQRT 4 -096
42
108
64
16

5. SQRT 625
7
25
72
40

6. 216^(1/3)
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)
85
44
6

7. Adding and Subtracting Decimals
343
48
Add their exponents (6^2 *6^3 = 6^5)
Line up the decimal points and proceed as usual

8. =4*20
99
2
80
Invert (reciprocal) the second fraction and multiply

9. SQRT 1 -296
128
54
36
Odd

10. =5*8
625
25
It gets smaller
40

11. =7*12
Line up the decimal points and proceed as usual
5
84
9

12. =3*13
39
A+B (Add both probabilities)
50
100

13. =4*10
160
40
280
270

14. =4^3
50
126
It gets smaller
64

15. =18*20
6 -561
360
220
Side - Side - Side^2

16. =7*19
153
96
90
133

17. 125^(1/3)
280
5
128
2

18. =2^3
91
8
10 -000 -000 -000
1 -024

19. =9^2
64
Odd
324
81

20. =17*19
32
323
8
2

21. =12*16
10 -000
192
Undefined
400

22. =14*15
210
35
128
36

23. =6*17
6
39
102
45

24. =12*17
64
30
136
204

25. 4/0 =
Undefined
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
54
280

26. Probability that A or B will happen?
126
A+B (Add both probabilities)
216
72

27. odd x odd =
28
108
Odd
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

28. =3*8
221
24
120
400

29. =8*9
72
240
6
320

30. =2^9
98
512
16
64

31. =17*18
5^(1/3)
300
306
Won't = 1 - Will

32. =13*17
256
221
(x-y)^2
256

33. Equation for a line?
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
Even
Pick the # that occurs most frequently
72

34. =18*19
342
121
1
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

35. =5^2
25
160
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
Will = 1 - Won't

36. Any number to the first power is?
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
Line up the decimal points and proceed as usual
Itself
144

37. =5^3
125
30
48
2

38. =5*6
144
30
221
729

39. Exponents - Dividing numbers with same base
192
95
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
2pr

40. =6*14
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
28
81
84

41. =4*13
NO
52
44
66

42. Another way to write cube root 5
NO
5^(1/3)
60
8

43. =11*13
96
143
Even
340

44. =6*15
33
90
104
144

45. =11*19
209
243
4 -096
Odd

46. SQRT 100
81
4 -096
10
5

47. =12*18
625
152
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
216

48. 729^(1/3)
96
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
9

49. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
168
0 (any fraction with 0 on top is 0)
Number of outcomes you want/total number of possible outcomes
It gets smaller

50. =7^1
84
85
196
7