Algebra-Level 2-3
Punching Numbers
You need
a hundreds board
a calculator
counters
a classmate
Activity One
1.
Starting with a one on your calculator, add two.
Keep adding two. Put a counter on your hundreds board
on each number that you get.
What pattern do you see?
2.
Starting with a five on your calculator, add five.
Keep adding five. Put a counter on your hundreds board
on each number you get.
What pattern do you see?
3.
Make up an adding-on pattern for your classmate to do on
their hundreds board.
Activity Two
1.
Nikki has a pattern on her hundreds board that starts with
the numbers 1, 2, 4, 8.
What does Nikki need to key in on her calculator to get the
next number in the pattern? Why?
2.
The pattern on Finlay’s hundreds board starts with the
numbers 1, 3, 9, 27.
What does Finlay need to key in on his calculator to get the
next number in his pattern? Why?
1
2
3
4
5
6
7
8
9
3.
Look at the pattern that Miffy has
shaded in on her hundreds board.
What numbers did Miffy key in on
her calculator to make this pattern?
12
21
22
32
41
52
61
62
Create your own calculator equation
pattern for your class to try out.
81
82
Number patterns
92
14
24
33
42
72
4.
13
65
66
85
86
94
76
96
18
28
37
46
56
74
84
93
45
17
26
36
54
64
73
25
34
44
53
16
97
49
98
50
60
69
78
88
30
40
58
68
77
29
38
48
57
10
20
70
80
89
90
100
3