Question

Answer these In scientific notation with work shown, adding scientific notation.

9.9 x 10^-1 + 5.2 x 10^-2

3.24 x 10^5 + 8.3 x 10^1

1.24 x 10^0 + 5 x 10^-1

Answer 1

Answer:

1.  $9.9 \times 10^{-1}   + 5.2 \times 10^{-2} = 104.2 \times 10^{-2}$

2. $3.24 \times 10^{5}   + 8.3 \times 10^{1} =32408.3 \times 10^{1}$

3.$1.24 \times 10^{0}   + 5 \times 10^{-1} = 13.64 \times 10^{-1}$

Step-by-step explanation:

1)  $9.9 \times 10^{-1}   + 5.2 \times 10^{-2}$

Now,  $9.9 \times 10^{-1}$  =  $99 \times 10^{-2}$  

So,  $99 \times 10^{-2}   + 5.2 \times 10^{-2}$  =  $104.2 \times 10^{-2}$  

2. $3.24 \times 10^{5}   + 8.3 \times 10^{1}$

Now,  $3.24 \times 10^{5}$  =  $32400 \times 10^{1}$  

So,  $32400 \times 10^{1} + 8.3 \times 10^{1}$  =  $32408.3 \times 10^{1}$  

3.$1.24 \times 10^{0}   + 5 \times 10^{-1}$

Now,  $1.24 \times 10^{0}$  =  $12.4 \times 10^{1-}$  

So,  $1.24 \times 10^{0}  + 12.4 \times 10^{1-}$  =  $13.64 \times 10^{-1}$