Rounding Round whole numbers to 10's, 100's, 1000's, 10'000's, 100,000's. Tools A B 345,395 Round to 1,000 345,000 345,395 Round to 100 345,400 345,395 Round to 10,000 350,000 345,395 Round to 10 345,400 345,395 Round to 100,000 300,000 2,837,384 Round to 10,000 2,840,000 2,837,384 Round to 100 2,837,400 2,837,384 Round to 1,000 2,837,000 2,837,384 Round to 100,000 2,800,000 2,837,384 Round to 10 2,837,400 4,596 Round to 1,000 5,000 4,596 Round to 10 4,600 4,596 Round to 100 4,600 34,234 Round to 10 34,230 34,234 Round to 100 34,200 34,234 Round to 10,000 30,000 34,234 Round to 1,000 34,000 Round to the nearest 1,000, if the mystery number is 16,000. Name the LEAST the number can be. 15,500 Round to the nearest 1,000, if the mystery number is 16,000. Name the MOST the number can be. 15,900