TINGGALKAN LINK ANDA DI SINI (",)

Selasa, 22 Februari 2011

TOPIC 2 : REVISION

TOPIC 2: NUMBER PATTERNS AND SEQUENCES


OBJECTIVE
1
12, 18, 24, 30, 36, ...
Describe the pattern of the above number sequence.
A
Adding 6 to the next number
B
Adding 6 to the previous number
C
Substracting 6 from the previous number
D
Multiplying the previous by 6


2
12, x, 24, 30, 36, y, ... Find the value of x+y.
A
18
B
22
C
42
D
60


3
List the first three prime numbers greater than 30.
A
31, 32, 33
B
31, 33, 37
C
31, 37, 41
D
37, 41, 43


4
Find the sum of all odd numbers between 10 and 20.
A
5
B
30
C
55
D
75


5
23, J, K, L, M, 43 are prime numbers arranged in increasing order. Which of the following is 37?
A
J
B
K
C
L
D
M


6
If the sum of prime factors is 10, the possible value of the number is ...
A
20
B
25
C
30
D
35


7
The following are the common multiples of 8 and 12 except
A
96
B
192
C
200
D
288

  
8
28 is a common multiple of 2 and M. M is a prime factor of 14 and 42.
What is the value of M?
A
2
B
3
C
5
D
7


9
Find the highest common factor of 16 and 24.
A
2
B
4
C
8
D
16


10
Given that (x-1) is the lowest common multiple of 9 and 12. Find the value of x.
A
35
B
36
C
37
D
38

SUBJECTIVE
1
Describe the pattern of the following number sequences:
a)     8, 10, 20, 22, 44, 46, ...
b)     48, 45, 47, 44, 46, 43, ...


2
Extend the following number sequences for the next two numbers.
a)     1, 1, 2, 6, 24
b)     3, 5, 10, 12, 24


3
List all the prime numbers between 20 and 40.


4
Find the lowest common multiple of the following numbers.
a)     16 and 18
b)     9, 12 and 21


5
Determine whether each of the following numbers is a common factor of the numbers in the bracket.
a)     4 (24, 52)
b)     6 ( 84, 106)


6
Find the sum of all prime numbers between 10 and 20.


7
List the LCM of each of the following sets of numbers by listing all the multiples:
a)     8 and 12
b)     12 and 16


8
Find the HCF of the following sets of numbers using prime factorisation.
a)     16 and 56
b)     35 and 63

Tiada ulasan: