Zadachki for Koliasik

Description Result
Baby runs away 3 ml/h, koliasik runs after with speed 4 ml/h, when he gets her Solved with small numbers more or less OK
Koliasik runs after Baby as program on Scratch Good Idea, have to test
Baby, Mama, Kolasik eat candy, B+M = 6 B+K = 4 K+M = 8 Solves, but with problems
X+Y = 18, X-Y = 6 Solves, I teach him to add/ substract equations, but I am not completely sure it helps.
Multiply Table (eventually with cards)Almost learned, but only after several weeks, now they already learn this at school