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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. =7^2
25
49
64
Even

2. =7*11
91
256
30
77

3. Any number to the 0 power is?
2
One (1)
100 -000
90

4. =12*13
20
9
156
49

5. 512^(1/3)
8
304
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
160

6. =15*15
114
288
225
1 -000 -000 -000

7. =6*18
204
108
156
16

8. =3^6
729
Won't = 1 - Will
Rate * Time = Distance (Hint: Draw a chart)
49

9. =3^3
Multiply the # of choices for each of the spots
100
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)
27

10. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
33
55
NO
8

11. =14*14
196
It gets smaller
Line up the decimal points and proceed as usual
512

12. =3*9
Itself
27
48
7 -776

13. =16*18
288
77
Undefined
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

14. =6*7
42
It gets smaller
108
Odd

15. =16*16
133
81
256
52

16. =7^3
343
220
126
266

17. =10^9
1 -000 -000 -000
400
135
238

18. Order of operations
15
260
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
2

19. =6*16
7
100
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
96

20. =11*17
4
187
5
72

21. =9*9
342
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
512
81

22. =15*17
255
Even
9
343

23. Exponents - Dividing numbers with same base
252
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
55
256

24. Does x^6 - x^2 = x^4?
220
114
1 -024
NO

25. =3*5
15
44
10
128

26. =5*6
3:4:5 -- 5:12:13 -- 7:24:25
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
16
30

27. =19*19
42
361
400
One (1)

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

29. even x even =
156
Even
380
Pr^2

30. =4*10
343
98
40
1 -000

31. Does x^2 + x^3 = x^5?
1 -296
Multiply the # of choices for each of the spots
NO
10 -000 -000 -000

32. =9*18
144
162
6
512

33. =11*16
320
5
Undefined
176

34. =4*18
42
182
135
72

35. Area of a triangle?
224
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)
154
(b*h)/2

36. =2^5
56
32
NO
256

37. =7*16
140
228
247
112

38. =8*12
96
90
Multiply the numerators and put the product over the product of the denominators
625

39. =6^4
1 -296
60
343
64

40. SQRT 10 -000 -000 -000
100 -000
64
76
Difference in the y-coordinates over the difference in the x coodinates

41. =4*17
68
380
24
125

42. =10^4
100
Difference in the y-coordinates over the difference in the x coodinates
9
10 -000

43. 343^(1/3)
7
224
220
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

44. =5^1
30
5
10 -000 -000 -000
171

45. =14*17
238
120
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
Odd

46. =6*12
72
Multiply both fractions to get a common denominator add or subtract as usual
96
96

47. =13*16
27
Amount of increase/original amount = x/100 (Then cross multiply to find x)
Multiply the numerators and put the product over the product of the denominators
208

48. =8*14
10 -000
64
5
112

49. =9*12
72
96
108
1.414213562

50. =18*20
180
56
360
5