Условие:

136 + 8
158 + 9
149 + 8
30 − (249)
40 − (188)
60 − (327)
3 + 4720
4 + 5640
6 + 7450

136 + 8 = (3 + 10) − 6 + 8 = 3 + (106) + 8 = 3 + 4 + 8 = 7 + 8 = 5 + 2 + 8 = 5 + 10 = 15
 
158 + 9 = (5 + 10) − 8 + 9 = 5 + (108) + 9 = 5 + 2 + 9 = 7 + 9 = 6 + 1 + 9 = 6 + 10 = 16
 
149 + 8 = (4 + 10) − 9 + 8 = 4 + (109) + 8 = 4 + 1 + 8 = 5 + 8 = 3 + 2 + 8 = 3 + 10 = 13
 
30 − (249) = 30 − (2445) = 30 − (205) = 3015 = 30105 = 205 = 15
 
40 − (188) = 4010 = 30
 
60 − (327) = 60 − (3225) = 60 − (305) = 6025 = 60205 = 405 = 35
 
3 + 4720 = 3 + 7 + 4020 = 10 + 4020 = 5020 = 30
 
4 + 5640 = 4 + 6 + 5040 = 10 + 5040 = 6040 = 20
 
6 + 7450 = 6 + 4 + 7050 = 10 + 7050 = 8050 = 30