To arrange the given sets of decimals from least to greatest, let’s look at each option:
-
1.9, 1.091, 1.09
- 1.9 (1.90)
- 1.091
- 1.09 (1.090)
- Order: 1.091, 1.09, 1.9 (not in order)
-
1.9, 1.09, 1.009
- 1.9 (1.90)
- 1.09 (1.090)
- 1.009
- Order: 1.009, 1.09, 1.9 (not in order)
-
1.09, 1.9, 1.92
- 1.09 (1.090)
- 1.9 (1.90)
- 1.92
- Order: 1.09, 1.9, 1.92 (in order)
-
1.99, 1.9, 1.09
- 1.99
- 1.9 (1.90)
- 1.09 (1.090)
- Order: 1.09, 1.9, 1.99 (not in order)
The correct set of decimals in order from least to greatest is 1.09, 1.9, 1.92.