Lizzy: Archie needs to lay sod in his backyard that measures 20 yards by 13 yards. He has a shed on it that measures 3 yards by 5 yards. How many square yards of sod will Archie need for his backyard?.
Me: Hmmm, let me think. I think this is the detailed solution:
20 * 13 = 260 square yards. 3 * 5 = 15 square yards. 260 - 15 = 245 square yards. Archie needs 245 square yards of sod. Final answer: 245.