When I tutored sixth grade math, it was not uncommon to see kids who guessed that 7 + 3 was 9. When you are that far behind in math, your only possible approach

When I tutored sixth grade math, it was not uncommon to see kids who guessed that 7 + 3 was 9. When you are that far behind in math, your only possible approach to the subject can be weird heuristics that make no sense.