Question

Complete the division problem by determining the number that should be placed in the box.

Answer 1

The solution 349 is given, and its number 3, 4 and 9 determine how many times 13 can be subtracted:

The first subtraction is 3x13 (x100) = 3900
The second subtraction is 4x13 (x10) = 520
The third subtraction is 6x13 = 78

So the answer is 520, which is also what you get when you subtract 78 from 598 of course.

Answer 2

The answer is 520. 

598 - x = 78

Subtract 78 from 598