Answer:

The Answer is 154

Step-by-step explanation:

We go into Straight collumn

66

+88 now 6 plus 8 is 14 we put the one on the other six now 7 + 8 is 15 so it is 154 at exact by regrouping the addenths

Answer:

66 + 88 = 100 because (6(6)) + (8(8)) = 100

Step-by-step explaination:

Lets go back to the three given clues...

The first one...

56 + 45 = 50 because (5(6)) + (4(5)) = 50

which is basically correct

The second one...

76 + 68 = 90 because (7(6)) + (6(8) = 90

which is also correct

The last one...

23 + 44 = 22 because (2(3)) + (4(4)) = 22

which is also correct

so that mean 66 + 88 = 100

(That was a fun riddle)