Writing of numbers from the greatest to the smallest is called an arrangement in ____ order.
descending
Step-by-step explanation (very simple):
Greatest to smallest means we start with the biggest number and keep going down to the smallest number.
This kind of arrangement is called descending order.
Think of going down a staircase. Each step you go down to a smaller number.
Example: Numbers: 9, 6, 3, 1
Arrange greatest to smallest: \(9 \gt 6 \gt 3 \gt 1\)
So, writing numbers from greatest to smallest = descending order.
(For your understanding: the opposite is ascending order — smallest to greatest, like \(1 \lt 3 \lt 6 \lt 9\).)