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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. =17*18
Even
306
96
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

2. 30:60:90 Right Triangle (Lenghts)
Base * Height
x:x^(1/3):2x
216
3

3. =7^2
57
49
5
32

4. =7*17
119
729
4 -096
36

5. =16*20
361
320
204
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

6. 0/1 =
0 (any fraction with 0 on top is 0)
2
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
168

7. =3*17
(b*h)/2
51
8
72

8. =4*11
25
324
44
NO

9. Any number to the negative power (y) is equal to?
15
1 -000 -000
It becomes positive
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

10. =18*19
36
323
342
126

11. =3*5
102
15
255
143

12. =13*14
105
182
16
Rate * Time = Distance (Hint: Draw a chart)

13. Exponents - Raising a power to a power
132
Undefined
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
144

14. =2^9
512
340
7
49

15. =19*20
320
380
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
95

16. How do you find the slope of a line?
40
114
343
Difference in the y-coordinates over the difference in the x coodinates

17. =9^4
6 -561
152
Undefined
40

18. =15*18
60
25
176
270

19. =15^2
1 -296
221
225
228

20. SQRT 10 -000 -000 -000
304
729
100 -000
16

21. 512^(1/3)
8
1 -296
32
Pr^2

22. =6*16
It gets smaller
The direction of the inequality symbol changes
6
96

23. Circumference of a circle?
165
2pr
3
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

24. SQRT 1 -296
54
36
3
133

25. =3*18
224
64
54
187

26. =8*13
63
24
5
104

27. =13*13
169
70
320
15

28. =6^2
256
153
128
36

29. =11*20
165
512
220
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

30. =6*17
102
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
165
100

31. =3*3
Rate * Time = Distance (Hint: Draw a chart)
52
42
9

32. =4*9
342
36
9
Combinations don't care about the order of the problems

33. =4^1
4
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
57
117

34. When is a number divisible by 4?

35. 0/1 =
343
0 (any fraction with 0 on top is 0)
49
3

36. =3*10
60
Undefined
1 -000 -000
30

37. SQRT 400
729
20
49
Add or subtract the numbers on top and keep the same denominator

38. SQRT 25
Even
44
156
5

39. =3^2
1 -000
125
9
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

40. =8^2
64
Add their exponents (6^2 *6^3 = 6^5)
625
63

41. SQRT 225
36
15
32
16

42. =18*18
324
96
133
16

43. Odds that something doesn't happen?

44. =10^1
10
96
208
171

45. Multiplying Fractions
2
Multiply the numerators and put the product over the product of the denominators
64
240

46. =14*17
400
Subtract the smallest number from the greatest number
238
108

47. =12*20
15
260
28
240

48. SQRT 729
380
400
27
81

49. =3*14
1 -000
209
252
42

50. =2^2
162
160
4
15