Question

Resolva as operações:

a) 5.10^2 + 3.10^2 b) 3.10^3 x 4.10^2

c) 2.10^5 x 3.10^4 d) 7.10^4 - 5.10^4

e) 15.10^8 ÷ 5.10^4​

Answer 1

Explicação passo a passo:

a)

5.10^2 + 3.10^2

( 5 * 10* 10) + 3 ( 10 * 10)

( 5 * 100 ) + (3 * 100 )

500 + 300 = 800 >>

b)

3.10^3 x 4.10^2

( 3 * 10³ ) * ( 4 * 10²) = 3 * 4 * 10^5 = 12 * 10^5 = 12 * 100 000 = 1 200 000>>>>

c) 2.10^5 x 3.10^4 = 2 * 3 * 10^9 = 6 * 1 000 000 000 =6 000 000 000 >>>

d) 7.10^4 - 5.10^4

7 * 10^4 = 7 * 10 000 =70 000

5 * 10^4 =5 * 1 0000 = 50 000

70 000 - 50 000 = 20 000>>>>>

e) 15.10^8 ÷ 5.10^4​ = 15 : 5 = 3 >>>

10^8 : 10^4 = 10^4 = 1 0000 >>>>

3 * 10 000 = 30 000 >>>>>