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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. SQRT 64
91
27
8
Move the decimal to the right on both numbers until there is nothing to the right of the decimal

2. =7^2
9
2
49
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

3. =19*19
50
361
56
512

4. =8*8
64
154
272
260

5. =15*16
240
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
4
65

6. Multiplying Fractions
98
27
Multiply the numerators and put the product over the product of the denominators
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)

7. What happens if you multiply or divide both sides of an inequality by a negative number?
27
2pr
56
The direction of the inequality symbol changes

8. 0/1 =
0 (any fraction with 0 on top is 0)
288
5
Odd

9. =10^9
10
0 (any fraction with 0 on top is 0)
1 -000 -000 -000
306

10. =9^5
140
25
59 -049
154

11. Circumference of a circle?
42
46 -656
39
2pr

12. Order of operations
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
108
132
729

13. =6*20
729
180
120
60

14. =3^6
1 -024
729
1 -000
112

15. =4*5
8
20
400
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

16. =3*3
112
285
90
9

17. =6*19
The direction of the inequality symbol changes
114
72
20

18. =12*12
204
144
176
25

19. =3*11
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
96
10 -000 -000 -000
33

20. =4*11
Even
44
1 -000
128

21. What is the difference between a permutation or a combination?

22. =9*9
81
343
20
56

23. =20^2
340
8
400
Undefined

24. =17*19
195
126
144
323

25. =25^2
108
36
4
625

26. SQRT 49
240
7
121
16

27. =8*10
80
49
4
25

28. =4^4
361
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
256
102

29. =5*19
180
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
95
8

30. =10^10
Pick the # that occurs most frequently
187
121
10 -000 -000 -000

31. SQRT 100
10
102
729
The direction of the inequality symbol changes

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

33. Area of a parallelogram?
10
12
260
Base * Height

34. =15*20
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
Even
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
300

35. =8*16
Side - Side - Side^2
221
128
126

36. =3*6
343
8
1 -000 -000 -000
18

37. SQRT 9
343
30
12
3

38. =3*9
20
27
120
270

39. =11*16
35
3
176
100

40. How do you find the median of a set of numbers?
117
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
280
Will = 1 - Won't

41. SQRT 36
125
20
6
272

42. =11*20
255
8
Multiply both fractions to get a common denominator add or subtract as usual
220

43. =11*11
0 (any fraction with 0 on top is 0)
42
3
121

44. =2^5
114
81
32
208

45. =4*17
220
98
9
68

46. SQRT 10 -000 -000 -000
10 -000
32
54
100 -000

47. Exponents - Raising a power to a power
It becomes positive
220
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
210

48. SQRT 256
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)
35
272
16

49. =5^2
216
8
Side - Side - Side^2
25

50. =6*7
42
280
(x-y)^2
49