Square it!
22
4
√100
10
√5
Between 2 and 3
11
9 and 16
12
1
52
25
√16
√12
between 3 and 4
36 and 49
32
9
62
36
√25
√70
Between 8 and 9
51
49 and 64
72
49
82
64
√49
7
√3
Between 1 and 2
96
81 and 100
92
81
112
121
√144
12
√101
111
100 and 121
122
144