Question

Use your calculator to work out
a) (1.8 × 10⁹) + (6.2 × 107)
b) (6.4 x 10-¹¹) - (5.3 × 10-¹2)
Give your answers in standard form.

Answer 1

Answer:

a) 1800000663.4

b) 0.0000000000587

Step-by-step explanation:

Answer 2

Answer:

(a) (1.8×10^9)=1800000000

(6.2×107)=663.4

So therfore,

(1.8×10^9)+(6.2×107)=1800000663

Note: "^" means exponential (power)

Step-by-step explanation:

(b) (6.4×10^-11)=0.000000000064

(5.3×10^-12)=0.0000000000053

Therefore ,

Answer= 0.0000000000587