8, 5 in church more 3 for every thief

4

5 cats The same five could continue to take 5 mice every 5 minutes during 100 minutes

0 (Zero)

10 (Roman numerals are used in all lines)

Adding an oblique line to the second sign (+), transforming it into a 4, then 5 + 545 = 550

R, they are the marches of a car

23

30
1 + 1 + 1 + 1 + 11 + 1 + 1 + 1 + 11 + 1 x 0 + 1 = 30

36 (1+1) x (1+1) = 4 (2+2) x (2+2) = 16 (3+3) x (3+3) = 36

The year of your birth if you have already turned years old. One more year if not.

67