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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. =10^6
1 -000 -000
160
A*B (Multiply both probabilities)
125

2. =7*7
36
210
49
Undefined

3. =2^8
256
270
2
1.732050808

4. =16*20
380
80
20
320

5. Area of a parallelogram?
32
1 -024
Base * Height
7

6. =3^2
9
343
306
It gets smaller

7. =8*13
18
104
144
90

8. =8*10
80
180
162
8

9. =10^7
10 -000 -000
42
8
1 -024

10. =14*18
100
252
36
42

11. SQRT 2 -401
49
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)
Multiply both fractions to get a common denominator add or subtract as usual
6

12. =2^7
42
228
128
10

13. =25^2
176
625
256
64

14. 27^(1/3)
7
52
12
3

15. =7^2
204
Pr^2
49
52

16. =8*20
64
323
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
160

17. =6^6
49
361
15
46 -656

18. =9*14
126
77
216
324

19. =8*9
272
84
(b*h)/2
72

20. 64^(1/3)
9
5^(1/3)
100 -000
4

21. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
216
80
It gets smaller
1 -296

22. =4^3
30
Even
64
11

23. 0/1 =
260
0 (any fraction with 0 on top is 0)
9
5

24. 216^(1/3)
A*B (Multiply both probabilities)
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
6
343

25. What happens if you multiply or divide both sides of an inequality by a negative number?
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
The direction of the inequality symbol changes
361
4 -096

26. Area of a circle?
Pr^2
1 -296
121
306

27. Probability that A or B will happen?
8
A+B (Add both probabilities)
25
75

28. When is a number divisible by 4?

29. =4^6
7 -776
4 -096
42
171

30. How do you find the median of a set of numbers?
144
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
2
30

31. =5*7
35
1 -024
64
625

32. =4*6
625
32
24
3:4:5 -- 5:12:13 -- 7:24:25

33. How do you tell if it's a permutation or combination?

34. =10^4
20
126
216
10 -000

35. Adding and Subtracting Decimals
80
Line up the decimal points and proceed as usual
98
42

36. =3^5
400
45
243
81

37. even x odd =
75
46 -656
Even
NO

38. =3^6
72
144
50
729

39. SQRT 1 -296
100
126
36
2pr

40. =8*8
64
Pr^2
49
25

41. Dividing Fractions
80
2 -401
8
Invert (reciprocal) the second fraction and multiply

42. =13*20
400
260
90
9

43. =2^3
8
64
24
216

44. =6*7
42
90
256
198

45. multiplying decimals
7
16
(x-y)^2
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

46. SQRT 100 -000 -000
306
A+B (Add both probabilities)
90
10 -000

47. =10^8
100
180
100 -000 -000
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

48. Pythagorean Triples (lengths)?
240
3:4:5 -- 5:12:13 -- 7:24:25
It becomes positive
108

49. Area of a triangle?
400
(b*h)/2
216
153

50. =16*18
288
256
81
100 -000