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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. Area of a circle?
64
Pr^2
15
81

2. =3^2
255
Odd
160
9

3. =9^3
729
171
2
361

4. =6^5
7 -776
18
48
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)

5. When is a number divisible by 3?
NO
5
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
247

6. =4^6
59 -049
4 -096
247
220

7. SQRT 25
16
5
105
1 -000

8. =13*15
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
195
224
24

9. =8*16
32
128
36
1.732050808

10. =6*16
96
Multiply both fractions to get a common denominator add or subtract as usual
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
340

11. =5*8
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
Undefined
40
27

12. =8^3
512
4
10 -000 -000 -000
81

13. Order of operations
Even
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
80
1 -000

14. Exponents - Dividing numbers with same base
32
4
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
252

15. =4*9
36
288
140
4

16. =16*19
304
63
180
NO

17. =3*5
16
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
15
228

18. Factor x^2-2xy+y^2
(x-y)^2
2
64
16

19. =8*17
24
136
144
66

20. =3*13
60
66
39
20

21. =5^1
400
5
64
144

22. =4*15
0 (any fraction with 0 on top is 0)
60
96
128

23. SQRT 36
266
42
100 -000
6

24. =16*18
Undefined
195
288
16

25. even + odd =
Odd
66
133
10 -000

26. =7*10
72
70
6
Will = 1 - Won't

27. =7*20
140
27
3 -125
45

28. Probability that A or B will happen?
One (1)
NO
255
A+B (Add both probabilities)

29. =8*12
35
3
247
96

30. =16*20
10 -000
Undefined
320
65

31. =11*20
64
340
220
80

32. =1^3
56
49
Add or subtract the numbers on top and keep the same denominator
1

33. =8*19
2
180
1 -024
152

34. =3^3
27
8
88
65

35. =3*18
2
Odd
54
180

36. how do you find the range of a set of numbers?
13
133
3
Subtract the smallest number from the greatest number

37. =16*17
64
272
2
323

38. =20*20
400
16
32
1 -024

39. =4^4
266
8
256
169

40. =8^1
8
243
55
84

41. =3*11
One (1)
42
33
100 -000

42. 216^(1/3)
0 (any fraction with 0 on top is 0)
57
6
121

43. SQRT 10 -000
100
143
7
8

44. odd + odd =
2
343
Even
240

45. =14*15
252
160
Odd
210

46. =17*18
180
11
90
306

47. =15*20
216
300
Amount of increase/original amount = x/100 (Then cross multiply to find x)
91

48. =15*15
6
225
Odd
198

49. =11*11
45
63
It becomes positive
121

50. Dividing Decimals
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
121
198