1. 100 -> 10²
2. 102 -> 10² + 2
3. 10^-3 -> 1/(1000)
4. 10^-2 -> 1/(100)
a. 0.01 -> 10^-2
b. 0.001 -> 10^-3
c. 1 -> 1
d. 100 -> 10^2
hope this helps
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