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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 Decimals
99
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
247
84

2. =3*13
39
238
27
60

3. =4*7
304
285
Rate * Time = Distance (Hint: Draw a chart)
28

4. =11*20
49
125
4 -096
220

5. =5*12
60
260
256
2

6. =3*16
304
48
40
343

7. =9*20
28
180
42
72

8. =11*15
192
165
20
256

9. =10^9
65
48
63
1 -000 -000 -000

10. =10^6
It gets smaller
1 -000 -000
60
4 -096

11. When is a number divisible by 3?
0 (any fraction with 0 on top is 0)
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
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
10

12. =20^2
8
25
400
96

13. =4*4
192
16
18
204

14. 8^(1/3)
Even
2
1 -296
100

15. =11*11
88
121
15
8

16. =7*8
100 -000
The direction of the inequality symbol changes
119
56

17. Dividing Fractions
15
Add their exponents (6^2 *6^3 = 6^5)
66
Invert (reciprocal) the second fraction and multiply

18. =8*14
Invert (reciprocal) the second fraction and multiply
112
Will = 1 - Won't
3

19. =5*9
125
7
729
45

20. =4*11
Won't = 1 - Will
221
Even
44

21. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
68
220
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
NO

22. =4^1
4
56
152
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

23. =12*12
144
5^(1/3)
0 (any fraction with 0 on top is 0)
56

24. =3*5
25
300
3:4:5 -- 5:12:13 -- 7:24:25
15

25. Any number to the first power is?
Itself
117
33
6

26. =3*11
48
324
33
Add or subtract the numbers on top and keep the same denominator

27. Exponents - Raising a power to a power
100 -000
169
30
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

28. 0/1 =
64
It gets smaller
0 (any fraction with 0 on top is 0)
7

29. =6*15
225
143
90
8

30. Area of a parallelogram?
3:4:5 -- 5:12:13 -- 7:24:25
144
64
Base * Height

31. =7*16
255
195
120
112

32. =13*17
221
169
1 -000 -000
52

33. =8*20
Rate * Time = Distance (Hint: Draw a chart)
Add or subtract the numbers on top and keep the same denominator
160
323

34. multiplying decimals
33
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
32
343

35. Does x^2 + x^3 = x^5?
1 -000 -000 -000
25
NO
5

36. =7*9
2 -401
63
361
100

37. =13*16
208
238
15
7

38. =9*17
153
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)
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
102

39. =2^9
512
210
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
187

40. Exponents - Dividing numbers with same base
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
95
133
72

41. =3*15
108
133
36
45

42. =8*9
100
72
625
4

43. =16*16
256
55
25
Even

44. =5*8
40
5^(1/3)
8
323

45. 64^(1/3)
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
4
Even

46. Area of a triangle?
256
16
729
(b*h)/2

47. =6*10
60
117
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
6

48. Multiplying Fractions
2
176
8
Multiply the numerators and put the product over the product of the denominators

49. =6*18
729
Number of outcomes you want/total number of possible outcomes
108
24

50. even + even =
16
It gets smaller
30
Even