Round 76.5 to the nearest whole number

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up (+1).

If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down (no change).

76.5 ≈ 77

76.5 = 77

the 5 to the right of the decimal determines that it will round up, so the 6 to the left of the decimal becomes a 7