16-12= - 4, 34-23= - 11, 45-24= - 21, 56-26= - 30, 73-31= - 32, 78-35= - 43, 77-36= - 41, 68-34= - 34, 68-32= - 36, 64-33= - 31,

Double Digit subtraction

Leaderboard

Visual style

Options

Switch template

Continue editing: ?