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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. 0/1 =
90
60
0 (any fraction with 0 on top is 0)
187

2. =16*17
340
272
Even
120

3. SQRT 2 -401
1 -000 -000
Rate * Time = Distance (Hint: Draw a chart)
64
49

4. =3^3
100
400
27
225

5. =10^4
90
324
10 -000
8

6. =9^1
64
238
9
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

7. When is a number divisible by 6?
3 -125
The direction of the inequality symbol changes
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)
289

8. =3*6
90
512
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)
18

9. Equation for a line?
70
3
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
Even

10. =8^2
98
Combinations don't care about the order of the problems
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
64

11. When is a number divisible by 4?

12. =3^3
Odd
7 -776
210
27

13. =13*17
221
16
33
100

14. SQRT 9
252
81
216
3

15. =3^2
260
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
4 -096
9

16. =4*12
49
36
1 -000 -000 -000
48

17. =15*17
2
255
512
Won't = 1 - Will

18. =13*16
361
9
208
81

19. 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)
228
182
210

20. =10^6
1 -000 -000
256
72
75

21. =4^4
84
256
4 -096
156

22. SQRT 10 -000
90
1 -024
100
16

23. =8^1
119
8
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)

24. even x even =
12
10
Even
187

25. =8*14
304
64
81
112

26. =13*18
234
75
1.414213562
Add their exponents (6^2 *6^3 = 6^5)

27. even + odd =
18
144
Odd
Side - Side - Side^2

28. Area of a circle?
120
9
Pr^2
81

29. =14*14
108
72
196
169

30. =4*16
10
168
64
78

31. =8*19
152
Odd
729
60

32. =4*17
2
512
68
90

33. When is a number divisible by 6?
Multiply the # of choices for each of the spots
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)
4
255

34. =4*10
80
40
361
6 -561

35. =7^4
247
2 -401
360
36

36. =4^1
4
126
5
Pick the # that occurs most frequently

37. =6*10
Permutations ask for 'arraingements' Combinations ask for 'Groups'
105
70
60

38. =12*16
36
114
192
Itself

39. =3*11
30
210
60
33

40. SQRT 64
11
90
1 -000 -000
8

41. =4*15
60
32
NO
7

42. odd x odd =
Multiply both fractions to get a common denominator add or subtract as usual
25
Odd
0 (any fraction with 0 on top is 0)

43. =4^5
1 -024
196
9
56

44. =10^3
133
Won't = 1 - Will
132
1 -000

45. =5*16
Multiply the # of choices for each of the spots
Permutations ask for 'arraingements' Combinations ask for 'Groups'
80
Difference in the y-coordinates over the difference in the x coodinates

46. =4*4
16
24
247
0 (any fraction with 0 on top is 0)

47. =11^2
Multiply the # of choices for each of the spots
13
216
121

48. =6*16
96
16
6
252

49. =6^1
361
1 -296
256
6

50. SQRT 100
80
7
81
10