Common core includes the Conductor(not originally included in the equation), The people shoveling the coal? The people Riding in the luggage compartment? Under the train and at the train station? The logical answer is that it is OVER 9000.....
No but seriously, 63-17=46. 46+19 = 65. Ding ding according to everyone with any ability to add and subtract.
The answer according to the work book is 46. Mind you this is a year 2(2nd grade) question.....
Lets just throw any basic math that we have learned our whole lives out the window.