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39/14 rounds to 3
71 rounds to 70 75 rounds to 80 79 rounds to 80
To estimate the sum of 7.4, 3.1, and 9.8, you can round each number to the nearest whole number. 7.4 rounds to 7, 3.1 rounds to 3, and 9.8 rounds to 10. Adding these rounded numbers together gives an estimated sum of 7 + 3 + 10 = 20.
3 rounds to zero.
Numbers 0 to 4 round down; 5 to 9 round up. 54 rounds to 50. 55 rounds to 60. So 50 rounds to 100.