Come up with a question and reasoning that would justify [4] as the answer.
The question is: Tommy is making steaks for his family. There are 5 of them in total. If each member wants one pound and the steaks are 20 ounces each, how many does he need to buy?
Reasoning: He needs 80 ounces of steak because 5 x 16 = 80. He need 4 steaks because 80 / 20 = 4.

Come up with a question and reasoning that would justify [1640] as the answer.
The question is: Matt wants to repaint his house. He needs to paint three walls in his living room, which is a square 40 feet by 40 feet, and all four walls in his bedroom, which is a rectangle 10 feet by 12 feet. All the walls in Matt's house are 10 feet tall. How many total square feet of wall does Matt need to paint?
Reasoning: First figure out how many square feet a wall in the living room is: 40 feet length * 10 feet height = 400 square feet. Now multiply by 3 since Matt needs to paint three living room walls: 400 square feet / wall * 3 walls = 1200 square feet. Next figure out how many square feet the long walls in the bedroom are: 12 feet * 10 feet = 120 square feet. There are two long walls, so multiply this figure by 2: 120 square feet / wall * 2 walls = 240 square feet. Next figure out how many square feet the short walls in the bedroom are: 10 feet * 10 feet = 100 square feet. Multiply this by 2, since there are two short walls: 100 square feet / wall * 2 walls = 200 square feet. Finally, add up the square footage from the three living room walls, the two short bedroom walls, and the two long bedroom walls: 1200 square feet + 240 square feet + 200 square feet = 1640 square feet.

Come up with a question and reasoning that would justify [1000] as the answer.
The question is: Sabrina went to the library and found a historical series novel called The Rangers Apprentice. There are 14 books in the series, and each book has 200 pages. She read four books in a month and half the number of books remaining in the second month. What's the total number of pages Sabrina has to read to finish the whole series?
Reasoning: The total number of pages in the series is 14 books * 200 pages / book = 2800 pages. Sabrina read 4 books * 200 pages / book = 800 pages in the first month. She still has 14 books - 4 books = 10 books after reading four books. In the second month, she read 1 / 2 * 10 books = 5 books. The total number of pages she read is 5 books * 200 pages / book = 1000 in the second month. In total, Sabrina 1000 pages + 800 pages = 1800 pages in two months. Sabrina has to read 2800 pages - 1800 pages = 1000 more pages to complete the total series.