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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. Dividing Fractions
Itself
Invert (reciprocal) the second fraction and multiply
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
48

2. =6*12
72
54
Undefined
Even

3. =7*20
8
140
100
40

4. Order of operations
153
144
135
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

5. SQRT 1 -024
95
Itself
729
32

6. =8^3
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
0 (any fraction with 0 on top is 0)
3:4:5 -- 5:12:13 -- 7:24:25
512

7. =2^2
260
The direction of the inequality symbol changes
4
119

8. =2^5
247
32
1 -000
100 -000

9. Any number to the 0 power is?
25
Odd
One (1)
125

10. Probability that A or B will happen?
121
96
A+B (Add both probabilities)
65

11. =4*20
182
80
240
216

12. how do you find the range of a set of numbers?
It gets smaller
Subtract the smallest number from the greatest number
96
204

13. =3*15
0 (any fraction with 0 on top is 0)
100 -000
45
182

14. =6*17
10 -000 -000
102
60
80

15. =4*16
8
70
16
64

16. =3^2
9
132
100 -000 -000
192

17. =7*7
49
234
Number of outcomes you want/total number of possible outcomes
55

18. 4/0 =
Add or subtract the numbers on top and keep the same denominator
2pr
Undefined
It gets smaller

19. =6^2
28
36
136
81

20. Right Isosceles triangle (lengths)?
54
The direction of the inequality symbol changes
Amount of increase/original amount = x/100 (Then cross multiply to find x)
Side - Side - Side^2

21. =4*8
32
45
85
81

22. SQRT 64
256
6
8
306

23. Another way to write cube root 5
144
208
64
5^(1/3)

24. =10^10
10 -000 -000 -000
40
210
Even

25. =13*20
68
625
260
88

26. =7*12
105
84
400
2

27. =15*16
7
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
15
240

28. =6*7
90
8
133
42

29. Adding and Subtracting Decimals
Invert (reciprocal) the second fraction and multiply
0 (any fraction with 0 on top is 0)
Line up the decimal points and proceed as usual
91

30. =3*13
39
216
120
3

31. =9*15
135
12
49
342

32. =5^2
64
25
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
228

33. Dividing Decimals
361
6
3:4:5 -- 5:12:13 -- 7:24:25
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

34. Key to percent increase/decrease
36
8
Multiply the # of choices for each of the spots
Amount of increase/original amount = x/100 (Then cross multiply to find x)

35. =25^2
300
1.414213562
Difference in the y-coordinates over the difference in the x coodinates
625

36. even x even =
240
6
Even
108

37. =5^4
266
625
56
306

38. =16*17
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
119
Multiply the # of choices for each of the spots
272

39. SQRT 10 -000 -000 -000
Multiply both fractions to get a common denominator add or subtract as usual
Will = 1 - Won't
1 -296
100 -000

40. =8*19
152
361
3
5

41. =4*17
270
68
49
1 -000

42. =14*20
204
81
280
20

43. =14*16
224
66
100
64

44. =3^5
85
x:x^(1/3):2x
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
243

45. SQRT 25
75
60
132
5

46. =4*14
1 -000
56
187
102

47. =5*7
35
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
Difference in the y-coordinates over the difference in the x coodinates
Permutations ask for 'arraingements' Combinations ask for 'Groups'

48. =3^1
42
5
3
91

49. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
95
112
Multiply the # of choices for each of the spots
126

50. SQRT 729
171
108
3
27