Basic Fundamentals

Analyze the patterns and solve the equations!

1) Solve
31220-14335=
2) Solve
395-252=
3) Solve
85011-34999=
4) Solve
326-250=
5) Solve
180693-108854=
6) Solve
3538-1674=
7) Solve
427100-181226=
8) Solve
3800-1726=
9) Solve
21000-20642=
10) Solve
413-233=
11) Solve
801-395=
12) Solve
59920-14190=
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