Test your basic knowledge |

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. =6^2
36
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
320

2. =3^6
512
156
729
5

3. =8*16
128
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
90
90

4. Multiplying Fractions
16
Multiply the numerators and put the product over the product of the denominators
Add or subtract the numbers on top and keep the same denominator
100 -000

5. =14*18
NO
252
360
729

6. SQRT 400
154
20
2pr
729

7. =8*15
625
120
132
7

8. Order of operations
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
165
1 -000 -000 -000

9. SQRT 16
3 -125
Rate * Time = Distance (Hint: Draw a chart)
4
8

10. =8*14
112
0 (any fraction with 0 on top is 0)
70
6

11. Area of a triangle?
72
16
49
(b*h)/2

12. =8^3
512
16
Rate * Time = Distance (Hint: Draw a chart)
32

13. =2^9
512
39
132
60

14. =10^9
220
1 -000 -000 -000
Add or subtract the numbers on top and keep the same denominator
210

15. SQRT 64
121
30
Even
8

16. even + odd =
Odd
The direction of the inequality symbol changes
42
126

17. =9^2
9
247
81
60

18. =7*7
Difference in the y-coordinates over the difference in the x coodinates
1 -000 -000
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
49

19. Adding or subtracting fractions with different denominators
154
192
Multiply both fractions to get a common denominator add or subtract as usual
272

20. =5^3
125
306
30
6 -561

21. =3*20
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
Subtract the smallest number from the greatest number
60
304

22. =10^6
144
1 -000 -000
Even
729

23. =16*20
1 -024
33
320
1 -296

24. =8*10
400
32
126
80

25. =5*20
Even
16
100
27

26. =7*14
28
108
98
24

27. multiplying decimals
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
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
16

28. =5^4
625
125
45
126

29. =10^4
6 -561
10 -000
Odd
320

30. Area of a parallelogram?
126
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
40
Base * Height

31. =12*18
216
125
96
Multiply both fractions to get a common denominator add or subtract as usual

32. =6*6
3
(b*h)/2
36
9

33. SQRT 81
9
40
The direction of the inequality symbol changes
Side - Side - Side^2

34. =6*8
77
48
108
1 -000

35. =4*6
8
Will = 1 - Won't
Multiply both fractions to get a common denominator add or subtract as usual
24

36. How do you find the median of a set of numbers?
143
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
125
220

37. =3*19
57
192
60
342

38. =7*9
171
63
152
80

39. =8^4
120
4 -096
32
45

40. =3*9
27
Odd
154
96

41. =4*11
54
343
70
44

42. =25^2
121
27
625
3

43. =12*17
Difference in the y-coordinates over the difference in the x coodinates
280
204
75

44. =12*14
4
256
1 -296
168

45. =4^1
8
44
4
32

46. =8^1
77
64
8
7

47. =11*18
105
63
198
400

48. Permutations: single source - order matters BUT only for a selection
It becomes positive
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
81
128

49. =12*19
2
90
228
220

50. =3^2
280
9
625
512