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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. =19*20
380
221
49
60

2. =4^2
It becomes positive
32
16
225

3. SQRT 10 -000
100
221
4
198

4. Does x^2 + x^3 = x^5?
60
NO
117
1 -000

5. =3*16
100
256
196
48

6. =18*18
10
324
Won't = 1 - Will
225

7. =13*14
16
104
182
304

8. =7*13
Difference in the y-coordinates over the difference in the x coodinates
6
Permutations ask for 'arraingements' Combinations ask for 'Groups'
91

9. 343^(1/3)
195
7
13
(x-y)^2

10. multiplying decimals
36
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
280
40

11. =4*14
56
8
196
Will = 1 - Won't

12. Dividing Fractions
48
Invert (reciprocal) the second fraction and multiply
35
112

13. SQRT 25
400
5
5^(1/3)
4

14. =14*19
1.732050808
75
729
266

15. =14*14
72
33
196
9

16. If you raise a negative number to an even power - what happens to the number?
153
Will = 1 - Won't
27
It becomes positive

17. =12*20
256
144
238
240

18. Permutations: single source - order matters
96
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
132
80

19. =10^1
10
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)
63
221

20. =5*14
Will = 1 - Won't
70
27
102

21. =5*16
140
80
24
180

22. =13*17
27
221
272
One (1)

23. =2^3
It gets smaller
162
8
4 -096

24. =2^10
54
304
49
1 -024

25. =17*20
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
340
64
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

26. =3*10
156
16
30
176

27. =6*13
78
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
24
121

28. =8*16
6 -561
128
3:4:5 -- 5:12:13 -- 7:24:25
224

29. =5*8
100
255
1.732050808
40

30. =9*14
45
288
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
126

31. =7*19
80
75
133
54

32. =7^1
4
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
91
7

33. 216^(1/3)
320
64
6
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)

34. =7*11
176
NO
77
Pr^2

35. =9*20
42
57
204
180

36. =8^4
Will = 1 - Won't
4 -096
729
91

37. =6*18
36
108
1 -000
9

38. =5^3
180
64
125
84

39. odd + odd =
64
Even
77
64

40. =4^4
323
8
57
256

41. =6*14
125
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
2
84

42. =12*16
105
90
192
169

43. =4*10
10 -000 -000
64
40
10

44. Area of a triangle?
120
48
76
(b*h)/2

45. =7*8
1
Difference in the y-coordinates over the difference in the x coodinates
15
56

46. =4*4
3
32
3 -125
16

47. =12*17
255
NO
216
204

48. SQRT 2 -401
49
255
Combinations don't care about the order of the problems
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

49. =4*13
44
70
52
9

50. Factor x^2-2xy+y^2
64
5
(x-y)^2
64