Question

Dan has 140 markers. How many more boxes of 10 markers does he need to get so that he will have 180 markers in all?

Answer 1

The difference between 180 and 140 is 180 - 140 = <<180-140=40>>40.
Therefore, Dan needs 40 / 10 = <<40/10=4>>4 more boxes of markers. Answer: \boxed{4}.