Try the shortcut with the following:
a) 25 ÷ 9 =
b) 61 ÷ 9 =
c) 34 ÷ 9 =
d) 75 ÷ 9 =
e) 82 ÷ 9 =
The answers are:
a) 2 r7
b) 6 r7
c) 3 r7
d) 8 r3
e) 9 r1
These methods are fun to play with and give insights into the way numbers work.