Plus 10's
20
30
Count from 20 to 50 by 10's
20, 30, 40, 50
5+[]=7
2
13+TT
33
Say the equation for 21
20+1=21
25
35
Count from 60 to 90 by 10's
60, 70, 80, 90
10+[]=14
4
32+TTT
62
Say the equation for 37
30+7=37
37
47
count from 5 to 20 by 5's
5, 10, 15, 20
23+[]=29
6
56+TTTT
96
Say the equation for 54
50+4=54
59
69
Count from 30 to 45 by 5's
30, 35, 40, 45
47+[]=51
4
61+TTTT
101
Say the equation for 77
70+7=77
82
92
Count from 75 to 90 by 5's
75, 80, 85, 90
73+[]=81
8
70+TTTT
110
90+2=92