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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. =6^3
216
32
220
143

2. =4*6
247
40
Even
24

3. =3*3
49
9
One (1)
81

4. =5^3
72
125
85
225

5. =9^3
27
2pr
340
729

6. =3*13
39
28
340
16

7. When is a number divisible by 4?

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

9. SQRT 2
1.414213562
152
256
400

10. =4^3
400
25
512
64

11. =2^2
80
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
4
169

12. =18*20
84
64
360
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

13. =4*18
108
8
72
Subtract the smallest number from the greatest number

14. =7*9
84
625
42
63

15. =19*20
49
Difference in the y-coordinates over the difference in the x coodinates
54
380

16. =3^2
9
3 -125
15
272

17. SQRT 225
(x-y)^2
15
5
100 -000 -000

18. SQRT 9
104
NO
3
182

19. =3*11
81
120
33
13

20. =6*9
16
65
54
7

21. =8*15
120
132
1 -296
6

22. =17*19
Will = 1 - Won't
42
323
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

23. =12*16
192
12
128
60

24. =2^1
63
3:4:5 -- 5:12:13 -- 7:24:25
256
2

25. Dividing Decimals
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
Itself
10
8

26. SQRT 25
8
81
60
5

27. Adding or subtracting fractions with the same denominator
Odd
56
Add or subtract the numbers on top and keep the same denominator
Multiply both fractions to get a common denominator add or subtract as usual

28. =13*18
Combinations don't care about the order of the problems
100 -000
Multiply both fractions to get a common denominator add or subtract as usual
234

29. 729^(1/3)
6
10
60
9

30. =8*8
3
64
72
10 -000 -000 -000

31. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
209
Multiply the # of choices for each of the spots
75
60

32. =4^5
117
133
1 -024
126

33. =16*16
112
256
48
304

34. How do you find the median of a set of numbers?
80
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
91
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

35. =3*18
272
152
40
54

36. =2^9
512
15
228
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)

37. =14*16
3
165
Permutations ask for 'arraingements' Combinations ask for 'Groups'
224

38. =3^1
3
400
It gets smaller
44

39. =11*18
114
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
198
60

40. SQRT 169
288
13
Rate * Time = Distance (Hint: Draw a chart)
Won't = 1 - Will

41. =8*13
104
(b*h)/2
136
Even

42. Area of a circle?
30
15
Pr^2
Multiply the numerators and put the product over the product of the denominators

43. =15*15
1 -024
225
56
(x-y)^2

44. =12*20
10 -000 -000 -000
240
28
306

45. =3*16
6
Will = 1 - Won't
72
48

46. SQRT 3
5
9
10 -000
1.732050808

47. 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)
Invert (reciprocal) the second fraction and multiply
117
96

48. Multiplying Fractions
187
Multiply the numerators and put the product over the product of the denominators
36
343

49. =7*20
140
180
112
100 -000

50. =3^3
11
8
27
8