Round to the underlined place. 18,904 a. 18,000 b. 19,000 c. 20,000 d. 18,900 round to the underlined place. 123,949 a. 123,940 b. 123,900 c. 123,950 d. 124,000 choose the best compatible numbers to find an estimated product or quotient. 48 × 29 a. 50 × 30 = 1,500 b. 40 × 30 = 1,200 c. 50 × 20 = 1,000 d. 50 × 25 = 1,250 choose the best compatible numbers to find an estimated product or quotient. 2,127 ÷ 405 a. 2,100 ÷ 300 = 7 b. 2,000 ÷ 500 = 4 c. 2,400 ÷ 400 = 6 d. 2,000 ÷ 400 = 5 round to the nearest hundred. then find the estimated sum of the two numbers. 465 + 778 a. 500 + 1,000 = 1,500 b. 500 + 800 = 1,300 c. 400 + 700 = 1,100 d. 400 + 800 = 1,200