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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. When is a number divisible by 6?
144
140
120
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)

2. =7*16
198
112
153
72

3. =8*14
361
625
112
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

4. SQRT 3
1.732050808
3:4:5 -- 5:12:13 -- 7:24:25
260
2

5. =8^2
1 -024
112
64
8

6. =4*13
52
260
225
3

7. =9*17
729
90
153
13

8. =10^5
100 -000
Multiply the numerators and put the product over the product of the denominators
272
27

9. 343^(1/3)
32
7
Odd
400

10. =6^4
247
1 -296
112
165

11. When is a number divisible by 3?
7
2
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
1.732050808

12. even x odd =
187
Even
180
272

13. =17*19
Permutations ask for 'arraingements' Combinations ask for 'Groups'
6 -561
323
36

14. =6*20
52
120
20
195

15. =5*18
90
729
126
204

16. =4^5
1 -024
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
152
104

17. =7*18
126
Even
36
238

18. How do you find the slope of a line?
Difference in the y-coordinates over the difference in the x coodinates
Will = 1 - Won't
112
64

19. =16*19
100
68
48
304

20. =2^7
128
Itself
3
400

21. =4*6
24
144
15
324

22. When is a number divisible by 4?

23. =12*17
Odd
204
360
80

24. Order of operations
289
2
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)
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

25. =6*15
27
16
90
80

26. =9^1
33
15
64
9

27. =5*16
80
10 -000
Pr^2
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)

28. What is the difference between a permutation or a combination?

29. =3*6
81
216
247
18

30. Area of a triangle?
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
(b*h)/2
48
Multiply both fractions to get a common denominator add or subtract as usual

31. =12*20
240
266
x:x^(1/3):2x
343

32. =7*13
400
3:4:5 -- 5:12:13 -- 7:24:25
1 -000
91

33. =6*12
72
90
285
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

34. What happens if you multiply or divide both sides of an inequality by a negative number?
The direction of the inequality symbol changes
7
112
Difference in the y-coordinates over the difference in the x coodinates

35. =5*9
45
400
8
33

36. =7*11
36
77
9
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

37. SQRT 81
270
266
NO
9

38. =7*15
323
196
121
105

39. =4^1
4
208
46 -656
Combinations don't care about the order of the problems

40. =5^1
120
120
Undefined
5

41. =3*9
7
50
27
6

42. When is a number divisible by 3?
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
100 -000
8
285

43. =3^6
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
729
266
8

44. =4*5
59 -049
285
260
20

45. Factor x^2-2xy+y^2
5^(1/3)
(x-y)^2
153
Combinations don't care about the order of the problems

46. Another way to write cube root 5
54
5^(1/3)
60
80

47. SQRT 100
10
Even
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
18

48. =2^9
512
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
27
Combinations don't care about the order of the problems

49. =6^1
40
216
60
6

50. SQRT 16
Multiply both fractions to get a common denominator add or subtract as usual
7
4
343