Need help in math pre algebra

1c

2d

3e

4a

Step-by-step explanation:

Simplifying all terms in 1, we get 1, 2, -2, 1/16. So the correct order is -2, 1/16, 1, 2. So the answer is C

Simplifying all terms in 2, we get 6, sqrt30, 1, and 4. While we can't completely simplify sqrt30 easily, we know that 5 squared equals 25 and 6 squared equals 36. 30 is in between, so we can assume sqrt30 is in between 5 and 6. So the answer is d.

Simplifying all terms in 3, we get 1/125, sqrt3, 1, and 0. Again, we can assume sqrt3 is between 1 and 2. So the answer is e.

Simplifying all terms in 4, we get 32, sqrt101, 25, sqrt399. We can assume sqrt101 is close to sqrt100, which is 10. We can also assume that sqrt399 is close to sqrt400, which is 20. So the answer is a.