Subtract Numbers Up To Three Digits

Question 1
Subtract.
154134144147

Question 2
Subtract.
383483363413

Question 3
Subtract.
612622662682

Question 4
Subtract.
349539486248

Question 5
Subtract.
479427437471

Question 6
Subtract.
167367467267

Question 7
Subtract.
399349394397

Question 8
Subtract.
183213614210

Question 9
Subtract.
709316216209

Question 10
Subtract.
587619534647