Calculate with 0 and 1 (10+(-9)) in 5-bit 2’s complement format. Is there overflow? If yes, why?

In single precision (IEEE-754 standard), 8 bits are used for storing the exponent (the bias is 127), and 23 bits are used for storing the mantissa.  (a) What are the smallest and the largest positive numbers that can be stored in single precision? (b) What is the smallest value of the mantissa that can be stored?

Assume we have a 6-bit 2's complement fixed-point representation. The smallest number we can represent is -8. What's the largest number we can represent? Give the answer in decimal.

Given (3.125)10 x 101, convert to IEEE 754 FP representation.