Download Properties of Number

Properties of Number
1. List the prime numbers between 1 and 20
2. List the multiples of 7 that are less than 50
3. List all the factors of
a)
24
b)
30
c)
18
4. List the first 10 square numbers
5. List the triangle numbers up to 50
6. Find from the list below
2, 3, 6, 9, 11, 12, 15, 16, 21, 23, 25, 27, 31, 33, 36, 39
a)
b)
All the square numbers
All the prime numbers
c)
d)
All the triangle numbers
A cube number
7. Find from the list below
15, 32, 49, 55, 63, 67
a)
b)
c)
All the even numbers
A prime number
A square number
d)
e)
f)
A multiple of 9
The square root of 225
A number in the sequence
3, 11, 19, 27, 35…
8. Say, with reasons, if the following are true or false (if false you must give an example)
a)
b)
c)
d)
e)
f)
g)
h)
All prime numbers are odd
All odd numbers are prime
All prime numbers above 10 are odd
All odd numbers below 10 are prime
Alternate square numbers are even
Alternate square numbers are odd
Multiplying always makes numbers bigger
Dividing always makes numbers smaller
Properties of Number - Answers
1.
List the prime numbers between 1 and 20
2,3,5,7,11,13,17,19
2.
List the multiples of 7 that are less than 50
7,14,21,28,35,42,49
3.
List all the factors of
a.
24
1,2,3,4,6,8,12,24
b.
30
1,2,3,5,6,10,15,30
c.
18
1,2,3,6,9,18
4.
List the first 10 square numbers 1,4,9,16,25,36,49,64,81,100
5.
List the triangle numbers up to 50
6.
Find from the list below
1,3,6,10,15,21,28,36,45
2, 3, 6, 9, 11, 12, 15, 16, 21, 23, 25, 27, 31, 33, 36, 39
a.
b.
7.
All the square numbers
9,16,36
All the prime numbers
All the triangle numbers
c.
3,15,21,36
A cube number 27
d.
2,3,11,23,31
Find from the list below
15, 32, 49, 55, 63, 67
a.
b.
c.
8.
All the even numbers 32
A prime number
67
A square number 49
d.
e.
f.
A multiple of 9 63
The square root of 225 15
A number in the sequence
3, 11, 19, 27, 35 67…
Say, with reasons, if the following are true or false (if false you must give an
example)
a.
b.
c.
d.
e.
f.
g.
h.
All prime numbers are odd false (2)
All odd numbers are prime false (9)
All prime numbers above 10 are odd
true
All odd numbers below 10 are prime
false (9)
Alternate square numbers are even
true
Alternate square numbers are odd
true
Multiplying always makes numbers bigger
false (0x0=0,1x1=1)
Dividing always makes numbers smaller false (1 = same)