What is 843 rounded to the nearest ten?

1. Locate the tens place in 843, which holds the digit 4. 2. Look at the digit to its right, which is 3. 3. Since 3 is less than 5, the tens digit stays the same and the ones digit becomes 0. 4. Rounding 843 to the nearest ten gives 840. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 1 "Whole Numbers", section 1.1 Introduction to Whole Numbers_