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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. =10^1
10
Pr^2
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
49

2. =3*17
20
4
51
6 -561

3. What happens if you multiply or divide both sides of an inequality by a negative number?
The direction of the inequality symbol changes
1.732050808
98
95

4. =18*20
360
176
56
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

5. =18*19
64
216
198
342

6. Pythagorean Triples (lengths)?
288
3:4:5 -- 5:12:13 -- 7:24:25
8
8

7. =2^7
70
240
128
162

8. =11*11
10 -000 -000 -000
121
64
625

9. =19*19
Undefined
144
28
361

10. How do you find the slope of a line?
360
Even
0 (any fraction with 0 on top is 0)
Difference in the y-coordinates over the difference in the x coodinates

11. =4*10
90
40
216
36

12. SQRT 3
6 -561
9
126
1.732050808

13. =9^1
192
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
9
243

14. =3^4
266
48
81
42

15. Does x^2 + x^3 = x^5?
NO
285
10 -000
400

16. =3^3
108
27
48
40

17. =15^2
225
(x-y)^2
16
60

18. =11*18
72
198
140
Pr^2

19. Circumference of a circle?
48
65
32
2pr

20. multiplying decimals
81
256
Pr^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

21. =11*19
209
255
NO
15

22. SQRT 1 -296
36
The direction of the inequality symbol changes
57
1 -000

23. =5*16
64
80
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
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

24. =12*17
64
204
Amount of increase/original amount = x/100 (Then cross multiply to find x)
24

25. SQRT 10 -000 -000 -000
400
12
100 -000
60

26. =3*5
1 -024
300
8
15

27. =3^6
5
135
169
729

28. 216^(1/3)
6
20
56
165

29. =4*16
64
60
225
32

30. Any number to the negative power (y) is equal to?
It gets smaller
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
105

31. Any number to the 0 power is?
80
24
48
One (1)

32. =7*13
1 -296
45
91
90

33. =14*20
306
126
280
6

34. =9*15
135
1
16
1 -296

35. 0/1 =
224
7
0 (any fraction with 0 on top is 0)
NO

36. SQRT 256
16
Combinations don't care about the order of the problems
216
380

37. 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)
Difference in the y-coordinates over the difference in the x coodinates
100
13

38. =7*10
Line up the decimal points and proceed as usual
105
70
24

39. =7*16
198
112
10
25

40. =4*18
72
343
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
48

41. =10^7
72
198
10 -000 -000
98

42. =19*20
1.732050808
380
285
72

43. SQRT 625
260
256
25
182

44. =7*8
56
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
216
195

45. =11*12
Even
234
132
30

46. =15*18
270
5
2
112

47. SQRT 2
1.414213562
x:x^(1/3):2x
176
128

48. =12*18
216
729
16
125

49. =7^2
343
192
49
165

50. Odds that something doesn't happen?