Question

a)6×10³÷2×10²
b)8×10(6)
2×10³
c)2×10(8)
8×10³
d) 9×10-³
12×10(5)
e) 8×10(5)
32×10-(7)
f) 6×10-(7)
0,5×10-⁴
me ajudem ??

Answer 1

Boa tarde!
a) 6 x 10³ : 2x10²=  6 x 10.000 : 2 x1.000= 60.000 : 2.000= 30

b) 8x 10(6) 2 x10³= 8x (60)2 x 10.000= 8 x 120 x 10.000= 9.600

c) 2 x 10(8)8 x10³= 2 x (800)8 x 10³= 2 x 6.400 x 10.000= 128

d) 9 x 10 -³ 12x10^(5)= 9 x (1/10³ ) 12 x 100000 = 9 x (1/1000)1200000= 10800000/1000= 10.800

e) 8 x10^(5) 32 x 10 - ^7= 8 x (100000) 32 x 1/10000000= 25600000/10000000= 2,56

f) 6 x (10-^7) 0,5 x 10-^4= 6 x (1/10000000)5/10 x 1/10000= 30/1000000000000= 0,000000000003