Missing Subtrahend (Mental Subtraction)

Solve these mental math problems!

1) Solve
616-119=
2) Solve
505-270=
3) Solve
422-99=
4) Solve
401-89=
5) Solve
140-33=
6) Solve
740-327=
7) Solve
950-275=
8) Solve
270-205=
9) Solve
467-219=
10) Solve
898-201=
11) Solve
578-185=
12) Solve
414-286=
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