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Series and Properties / Practice
1.
2
Look at the numbers in the list. Circle the numbers that are prime
numbers.
6
2.
12
20
23
29
31
Write the next two numbers in each line.
•
2
5
11
20
32
__
•
5.7
5.8
6.0
6.3
___
___
•
1½
2 2 ¾ 3 ¾ ___
___
•
0.001 0.01
0.1
___
___
•
97
86
76
67
___
•
0.25
0.51
0.77
___
3.
2
___
Underline the factors of 18
3
4.
2
__
4
5
6
7
8
Underline the factors of 21
3
5.
11
15
7
Fill in the next two numbers in each line.
95
89
84
80
___
___
89
77
67
59
___
___
31
33
36
40
___
___
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144
121
6.
3
7.
___
___
23
33
43
53
63
What are the first four multiples of 4?
___
8.
___
81
Put a circle around the numbers, which are not prime numbers.
13
___
100
___
___
Find the first number in the sequence below.
9.5
9.
10.2
11.0
11.9
Circle the set of numbers below, which are either all multiples of 3
or 4?
8, 9,10
9,10,12
8,12,16
12,14,16
14,15,16
10.
8
List the numbers between 60 and 80 which are multiples of
__________________________________________
9
__________________________________________
8 and 9________________________________________
11.
List the factor pairs for 30
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12.
Fill in the missing numbers in the number pattern below.
1001 996
13.
2
___
986
981
The first eight numbers in a sequence are:
4
7
11
16
22
Which of these are prime numbers?
29
37
___
Which of these are factors of 88? ___
What are the next three numbers in the sequence _____
______
______
14.
The rule for getting the next number in the sequence is:
“Add the previous two numbers together and write down half the answer.”
Write the two next numbers:
8
4
15.
2
6
___
___
Write the following numbers in the correct place on the diagram.
3
4
15
16
20
Prime
Square
Factor of 15
Even
16.
1.8
The rule here is to add 0.3 each time
2.1
2.4
___
___
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Multiple of 5
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17.
4.6
The rule here is to add 0.4 each time
___
18.
32
5.4
The rule here is to double the previous number and add 1
65
19.
1.80
20.
6.60
___
___
Subtract 0.45 each time
___
0.90
Add 0.3 each time
___
7.20
___
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Answers
1. 2
23
2. 47
65
6.7
7.2
5
6½
1.0
10.0
59
52
1.03
3. 2
3
4. 3
7
5. 77
75
53
49
45
51
64
49
6. 33
63
7. 4
8
8. 8.9
9. 8,12,16
10. 64
72
63
72
72
11. 1,30 2,15
12. 991
13. 2
7
2
4
46
56
14. 5
5½
15.
29
31
6
12
16
3,10
5,6
11
22
67
29
11
Prime
37
Square
Multiple of 5
Factor of 15
3
Even
16. 2.7
17. 5.0
18. 131
19. 1.35
20. 6.9
2
15
16
4
3.0
5.8
7.5
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