Unit 1 Secret Numbers Pattern Worksheet Page 15
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34The numbers in the coloured squares form an increasing pattern.
1
2
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5
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10
The numbers in the yellow
11 12 13 14 15 16 17 18 19 20
squares end in 0. The numbers
in the blue squares end in 5,
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41
42
43
44
45
46
47
48
49
50
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60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91
92
93
94
95
96
97
98
99
100
➤ The pattern rule for the yellow squares is:
• Start at 10. Add 10 each time.
10
20
30
40
50
60
70
80
90
100
+10
+10
+10
+10
+10
+10
+10
+10
+10
The pattern makes 1 vertical line.
The tens digit increases by 1. The ones digit is always 0.
➤ The pattern rule for the blue squares is:
• Start at 5. Add 10 each time.
5
15
25
35
45
55
65
75
85
95
+10
+10
+10
+10
+10
+10
+10
+10
+10
The pattern makes 1 vertical line.
The tens digit increases by 1. The ones digit is always 5.
16
Unit 1 Lesson 4
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