Adding missing number.
can anyone help me explain how to solve them easily? tips and breakdown solution.

Just subtract the answer by the number on the left hand side
1a) 6-4.9= 1.1
B) 7-3.3= 3.7
C) 1-0.35= 0.65
D) 1-0.77= 0.23
E) 8-6.04= 1.96
F) 10-5.61= 4.39
G) 8-0.764= 7.236
H) 6-4.282= 1.718
Hope this helps ;)

Same length is comparing because it’s saying its the same and not different