HENRY MATH
100000000+ 1234567890 write it on the bord
2234567890
1000000 x 0
0
12 x12
144
11 x5
55
1234567890-1234567890
0
6 x 3
18
13-4
9
7 x7
49
3+90
93
6 x 9
54
6 x 6
36
90-87
3
3 x 4
12
98-16
82
7 x 9
63
2 x 3
6
34-7
27
2 x2
4
55+45
100
236-7
229
8 x 8
64
12 -4
8
5 x 6
30
34+2 x2
70
58-48
10