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NCP 301 Packet #2
Standard
NCP 201
NCP 301
NCP 401
Description
Review
Recognize equivalent fractions and fractions in lowest term.
Focus
Recognize one-digit factors of a number.
Stretch
Exhibit knowledge of elementary number concept including rounding,
the ordering of decimals, pattern identification, absolute value, primes,
and greatest common factor.
Review
1. Simplify each rational expression.
125

625
27

81
39

52
3

12
2. Which of the following is NOT equivalent to
A.
2
12
B.
4
24
C.
6
40
D.
5
30
E.
3
18
3. Which of the following is NOT equivalent to
A.
6
16
B.
15
40
C.
31
81
D.
33
88
E.
30
80
4. Which of the following are equivalent to
A.
12
150
B.
160
200
C.
160
300
D.
8
50
1
?
6
E.
40
250
4
?
25
3
?
8
Focus
5. What is the greatest common factor of 25 and 40?
6. What is the GCF of 6 and 9?
7. What is the GCF of 12 and 18?
8. What is the GCF of 18, 24, & 36?
9. What is the GCF of 7, 14, and 21?
10. What is the least common multiple of 5 and 2?
11. What is the LCM of 12 and 18?
12. List all the positive factors of 125.
13. List all the positive factors of 72.
14. Is 13 a factor of 26?
15. Explain:
16. Is 72 a factor of 127?
17. Explain:
18. Which of the following is/are even?
I. 12
II. 36
III. 101
A.
B.
C.
D.
E.
I only
II only
I and II only
I and III only
I, II, and III
19. Which of the following is (are) odd?
I. 24.31
II. 22.49
III. 33.101
F.
G.
H.
I.
J.
I only
II only
I and II only
I and III only
I, II, and III
20. If A=22 (3) (7) = 84, how many positive factors, including 1 and 84, does A have?
21. If B=5(8) (11)=440, how many positive factors, including 1 and 440, does B have?
Stretch
22. How many prime numbers are greater than 20 but less than 30?
23. How many prime numbers are greater than 50 but less than 60?
24. 1   2  13   4  17   14 
25. Order from least to greatest.
0.9,1.09, 0.0009, 0.009, 0.09, 9.01, 1.9
26. Order from least to greatest.
-0.9,-1.09, -0.0009, -0.009, -0.09, -9.01, -1.9
27. Round each number to the nearest tenth.
9.98
8.7342
-4.401
287.123
28. Describe the pattern. Then find the next two numbers in each pattern.
 1, -3, 9, -27…
 1, 9, 25, 49, …
 5, 9, 13, 17, …
 -5, -2, 1, 4, …

1 1 1
, , ,0,...
2 3 6
29. Which of the following is(are) prime?
I. 11
II. 111
III. 1,111
A.
B.
C.
D.
E.
Only I
Only II
Only I & II
Only I & III
I, II, & III