Related addition facts matching exercise – interactive online quiz for children to test math skills in addition. Here different addition problems will be presented and kids will be asked to find addition facts that are related. This means finding addition problems which have the same final answer (or sum). Once this is done, kids are required to find a match in the puzzle. It is hence a matching exercise for those with related facts. This activity is for kindergarten, 1st, , 2nd and 3rd grades.