Tens Board 10 30 70 40 20 90 50 80 60 20
80 50 10 90 70 60 30 40 80 10
40 20 90 50 80 50 80 60 20 30
10 70 60 20 30 20 90 80 10 40
70 40 20 90 50 10 30 70 60 20
10 60 80 60 40 20 50 10 30 50
90 50 70 20 80 70 60 20 70 60
40 30 90 10 30 10 90 70 30 40
10 50 80 60 40 60 30 70 40 20
60 20 10 80 50 20 40 10 90 70
Maths at Home Buzzard Publishing