# Ex 12.2, 3 (iv) - Chapter 12 Class 8 Exponents and Powers

Last updated at Sept. 9, 2021 by Teachoo

Last updated at Sept. 9, 2021 by Teachoo

Transcript

Ex 12.2, 3 Express the number appearing in the following statements in standard form. (iv) Size of a plant cell is 0.00001275 m 0.00001275 m = 1275/100000000 = 1275/〖10〗^8 = 1275 × 〖10〗^(−8) = (1.275 × 〖10〗^3) × 〖10〗^(−8) = 1.275 × (〖10〗^3×〖10〗^(−8)) = 1.275 × 〖10〗^(3 + (−8)) = 1.275 × 〖𝟏𝟎〗^(−𝟓) m (Using 𝑎^𝑚×𝑎^𝑛=𝑎^(𝑚 + 𝑛))

Ex 12.2

Ex 12.2, 1 (i)
Important

Ex 12.2, 1 (ii)

Ex 12.2, 1 (iii)

Ex 12.2, 1 (iv)

Ex 12.2, 1 (v)

Ex 12.2, 2 (i) Important

Ex 12.2, 2 (ii)

Ex 12.2, 2 (iii)

Ex 12.2, 2 (iv)

Ex 12.2, 2 (v)

Ex 12.2, 2 (vi)

Ex 12.2, 3 (i) Important

Ex 12.2, 3 (ii)

Ex 12.2, 3 (iii)

Ex 12.2, 3 (iv) You are here

Ex 12.2, 3 (v)

Ex 12.2, 4

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