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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. =7*18
360
126
39
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

2. =6*13
247
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
78
76

3. SQRT 10 -000
Even
100
80
12

4. How do you find the mode of a set of numbers?
Pick the # that occurs most frequently
225
36
80

5. =4*4
16
A+B (Add both probabilities)
400
300

6. =8*17
90
Rate * Time = Distance (Hint: Draw a chart)
136
105

7. =11*17
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
4
187
Side - Side - Side^2

8. =12*20
52
240
280
A*B (Multiply both probabilities)

9. =4*7
Side - Side - Side^2
Invert (reciprocal) the second fraction and multiply
28
240

10. =7*8
100
Undefined
210
56

11. =4^3
64
112
54
221

12. =13*14
182
78
243
168

13. =5^1
3 -125
125
64
5

14. =8*16
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
NO
128
1 -024

15. =11*16
Even
77
100 -000 -000
176

16. Odds that something doesn't happen?

17. =5*10
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
400
50
Combinations don't care about the order of the problems

18. =14*14
252
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
90
196

19. =5^4
154
72
625
Itself

20. =9^3
288
81
380
729

21. =9^5
42
59 -049
156
256

22. SQRT 625
10
25
Side - Side - Side^2
Undefined

23. Dividing Decimals
1
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
225
40

24. =11*15
120
56
165
The direction of the inequality symbol changes

25. =2^5
32
50
16
10 -000 -000 -000

26. =15*20
300
512
112
48

27. =14*19
266
4
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
54

28. =12*17
343
Add their exponents (6^2 *6^3 = 6^5)
204
10 -000 -000 -000

29. =9*9
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
10
81
33

30. =11*14
64
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
154

31. =3*13
A+B (Add both probabilities)
32
39
88

32. Distance Formula?
16
126
Rate * Time = Distance (Hint: Draw a chart)
102

33. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
90
NO
95
289

34. Probability that A and B will both happen?
65
A*B (Multiply both probabilities)
182
Add their exponents (6^2 *6^3 = 6^5)

35. =14*20
280
76
28
39

36. =3^3
48
27
64
1 -000 -000

37. =8^3
39
2
70
512

38. 0/1 =
0 (any fraction with 0 on top is 0)
102
1
256

39. =6^5
65
81
7
7 -776

40. =3*10
30
48
112
3 -125

41. =8^2
48
64
77
171

42. =6*16
64
96
84
48

43. =14*18
280
Number of outcomes you want/total number of possible outcomes
10 -000 -000
252

44. =5*20
210
1
100
One (1)

45. Any number to the 0 power is?
15
1 -296
8
One (1)

46. =10^1
16
10
5
Multiply both fractions to get a common denominator add or subtract as usual

47. =5*13
65
64
100
280

48. =10^3
234
25
1 -000
50

49. =7*14
98
55
342
9

50. When is a number divisible by 4?