Question

a) 2,0 x 10 elevado a 3 + 3,0 × 10 elevado a 2b) 1,5 × 10 elevado a 2 + 0,5 × 10 elevado a 2c) 3,0 × 10 elevado a 3 - 2,5 × 10 elevado a 2 d) 4,0 × 10 elevado a 2 - 2,5 × 10 elevado a 2 ?

Answer 1

a)2,0 x 10 elevado a 3 + 3,0 × 10 elevado a 2
   2,0 x 1000 + 3,0 x 100 = 2000 + 300 = 2300
 
b)1,5 × 10 elevado a 2 + 0,5 × 10 elevado a 2
    1,5 x 100 + 0,5 x 100 = 150 + 50 = 200

c)3,0 × 10 elevado a 3 - 2,5 × 10 elevado a 2 
   3,0 x 1000 - 2,5 x 100 = 3000 - 250 = 2750

d)4,0 × 10 elevado a 2 - 2,5 × 10 elevado a 2 
   4,0 x 100 - 2,5 x 100 = 400 - 250 = 150