is 84 rounded to 90 or 80
84 is rounded to 80. The last digit (4) is less than 5.
80
To determine whether 84 should be rounded to 90 or 80, you need to consider the rounding rules.
Typically, when rounding numbers, you look at the digit immediately to the right of the place value you want to round to. In this case, we want to round to the nearest ten.
If the digit to the right is 0-4, you round down, and if it is 5-9, you round up. In the number 84, the digit to the right of the tens place is 4.
Since 4 is less than 5, you round down, which means 84 rounded to the nearest ten is 80.