Janice is making 12 wooden picture frames to give to her friends this year as holiday presents. each frame has a length of 10 inches and a width of 8 inches. how many total inches of wood will janice need for all 12 frames?

To solve this problem, your need to find the perimeter of the frame and multiply it by 12 because there 12 frames.  to find the perimeter, you just have to add 10 and 8 (18) and multiply the sum by two (36).  Next, you have to multiply your product by 12 because there are 12 frames.  Your final answer should be 432 inches of wood.