10 + 20 = - 30 , 15 + 15 = - 30 , 0 + 30 = - 30 , 29 + 1 = - 30 , 10 + 10 = - 20 , 5 + 15 = - 20 , 11 + 9 = - 20, 3 +17 = - 20 , 100 + 0 = - 100, 10 + 90 = - 100, 1 + 99 = - 100, 20 + 80 = - 100, 1 + 9 = - 10 , 2 + 8 = - 10, 3 + 7 = - 10, 5 + 5 =  - 10, 50 + 0 = - 50 , 40 + 10 = - 50, 5 + 45 = - 50, 30 + 20 = - 50,

Addition facts

by
Print
Embed

Leaderboard

Flash cards is an open-ended template. It does not generate scores for a leaderboard.

Visual style

Options

Switch template

Continue editing: ?