Final answer:
The rational numbers -2.15, 3/10 (-1), -1, 4/5 (0.8), and 0.8 listed from least to greatest are -2.15, -1, 0.3, 0.8, and 0.8.
Step-by-step explanation:
To list the rational numbers -2.15, 3/10, -1, 4/5, 0.8 in order from least to greatest, we first need to make sure all numbers are expressed in the same format.
The number 3/10 as a decimal is 0.3, and 4/5 is the same as 0.8.
Now, we can easily compare all numbers as decimals.
We have the following numbers: -2.15, 0.3, -1, 0.8, 0.8.
Next, we place them in order, keeping in mind that negative numbers are less than positive numbers.
- -2.15
- -1
- 0.3
- 0.8
- 0.8.
We have listed the rational numbers from least to greatest as requested. Note that 0.8 appears twice because 4/5 is equal to 0.8, just as in decimal form.