To find the answer, we need to look at the information. We have: 12 pencils bought 0.57 per pencil Paid with a 10$ bill. First, find out how much he spent on pencils. Multiply 12 by 0.57. This will give you 6.84. Next, we know he paid with a 10 dollar bill. Subtract the amount due from the amount paid. 10 - 6.84. This will give you 3.16. So, the amount of change due is 3.16