40 - 31+9=, 70 - 66+4=, 50 - 42+8=, 20 - 13+7=, 90 - 85+5=, 30 - 29+1=, 60 - 57+3=, 80 - 72+8=,

數3C11 加法

Leaderboard

Visual style

Options

Switch template

Continue editing: ?