Fill in the Blanks optellen tot 20Online version optellen tot : T+E, E+T, TE+E. methode rekensprong by Bourgeois silke 1 15 18 13 15 11 18 10 12 16 20 17 20 15 19 2 1 ) 20 + 0 = 2 ) 1 + 10 = 3 ) 10 + 0 = 4 ) 5 + 10 = 5 ) 10 + 7 = 6 ) 10 + 2 = 7 ) 3 + 10 = 8 ) 8 + 10 = 9 ) 6 + 10 = 10 ) 0 + 20 = 11 ) 13 + 2 = 12 ) 11 + 4 = 13 ) 17 + 2 = 14 ) 15 + 3 = 15 ) 12 + 8 =