Actually it very solvable, my wife and I just did it multiple times using different numbers in the middle column. She suggested that all of the middle numbers are multiples of the number in the left column i.e. 15 is divisible by 5. However I solved it using numbers that were prime. It’s doable just ridiculously complicated especially for first and second graders. I believe it is another attempt to do away with absolute truths.
Actually you are incorrect. In this exercise the student is required to use addition to make the first number a multiple of ten....until you get to the final multiple. The instructions sent with the problem actually state this.....at least they did in grandson’s class