Answer:1.) 50 = 502.) 74 = 703.) 39 = 404.) 77 = 805.) 92 = 90Step-by-step explanation:How to Round to the Nearest Tens:Look at the ones digit (the last digit of the number):If the ones digit is 5, 6, 7, 8, or 9, you round up to the next tens.If the ones digit is 0, 1, 2, 3, or 4, you round down to the lower tens.