Question

notação cientifica:
0,00036x0,005= 75000000x0,000003= 81000000000000000÷0,009=

Answer 1

0,00036x0,005=
3,6*10⁻⁴ x 5*10⁻³ = 

18 * 10⁻⁷

75000000x0,000003=
7,5*10⁷ x 3*10⁻6

2,25 * 10²


81000000000000000÷0,009=

8,1 * 10¹⁶ 
-------------   =  9 * 10¹⁸
9 * 10⁻³