Question

Perform the operation. Enter your answer in scientific notation.   9 × 102 − 5.6 × 102 =

Answer 1

Answer:

1489.2

Step-by-step explanation:

9*102-5.6*102=

102(9+5.6) =

102(9.0+5.6) =

102(14.6) =

102*14.6=

14.6*(100+2) =

(14.6*100+14.6*2) =

(1460+(14+.6) *2) =

1460+(28+1.2) =

1460+(28.0+1.2) =

1460+29.2=

1460.0+

29.2

=1489.2

Answer 2

Answer:

$9\times 10^2-5.6\times 10^2=3.4\times 10^2$

Step-by-step explanation:

Given : Operation $9\times 10^2-5.6\times 10^2$

To find : Perform the operation ?

Solution :

Operation $9\times 10^2-5.6\times 10^2$

Taking $10^2$ common,

$=9\times 10^2-5.6\times 10^2$

$=10^2\times (9-5.6)$

$=10^2\times (3.4)$

$=3.4\times 10^2$

Therefore, $9\times 10^2-5.6\times 10^2=3.4\times 10^2$