Een sprong tot 10 en dan er-over - oefening 4
brug

  8 + 7 =
(8 + ) + =
+ =
7 + 9 =
(7 + ) + =
+ =
9 + 7 =
(9 + ) + =
+ =
6 + 5 =
(6 + ) + =
+ =
9 + 5 =
(9 + ) + =
+ =