Question

10. Multiply the following numbers using scientific notation. show the steps. (See Ex. 5)

(2 x 103)(3 x 104).





11. Divide the following numbers using scientific notation. Show the steps as they are done in the lesson. (See Ex. 6)




-42 x 102

14 x 103

Answer 1

10) 6 × 10⁷

11) -3 × 10⁻¹

Explanation:

Assuming that (2 x 103)(3 x 104) =

(2 × 10³)(3 × 10⁴) =

(2 × 10³) × (3 × 10⁴)

And the division of

(-42 x 102) and (14 x 103) =

(-4.2 × 10²) ÷ (1.4 × 10³)

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