a) 8,5· 10-6+4,2·10-6 = 12,7·10-6 = 1,27·10-5b) 2,3· 10-⁴–1,8· 10-⁴ = 0,5· 10-⁴ = 5·10-5c) 6,3· 10-8–1,8· 10-9 = 6,3· 10-8 - 0,18·10-8 = 6,12·10-8 = 6,12·10-8d) 5,4· 10-7+2,3· 10-8 = 5,4· 10-7 + 0,23·10-7 = 5,63·10-7 = 5,63·10-7
a) 8,5· 10-6+4,2·10-6 = 12,7·10-6 = 1,27·10-5
b) 2,3· 10-⁴–1,8· 10-⁴ = 0,5· 10-⁴ = 5·10-5
c) 6,3· 10-8–1,8· 10-9 = 6,3· 10-8 - 0,18·10-8 = 6,12·10-8 = 6,12·10-8
d) 5,4· 10-7+2,3· 10-8 = 5,4· 10-7 + 0,23·10-7 = 5,63·10-7 = 5,63·10-7