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Standard VII

Mathematics

Expressing Numbers in Standard Form

Question 3iii...

Question

Question 3(iii)
Express the number appearing in the following statements in standard form:
Size of bacteria is 0.0000005 m.

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Solution

Size of bacteria is 0.0000005 m
$= 0.0000005 \times \frac{10^{7}}{10^{7}} = 5 \times 10^{- 7} m [∵ a^{- m} = \frac{1}{a^{m}}]$

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Similar questions

Question 3(iii)
Express the number appearing in the following statements in standard form:
Size of bacteria is 0.0000005 m.

Q. Express the number appearing in the following statements in standard form:
(i)

1

micron is equal to

\frac{1}{1000000}

m
(ii) charge of an electron is

0.000, 000, 000, 000, 000, 000, 16

coulomb
(iii) size of bacteria is

0.0000005

m
(iv) size of plant cell is

0.00001275

m
(v) Thickness of a thick paper is

0.07

Express the number appearing in the following statements in standard form.

(i) 1 micron is equal to m.

(ii) Charge of an electron is 0.000, 000, 000, 000, 000, 000, 16 coulomb.

(iii) Size of a bacteria is 0.0000005 m

(iv) Size of a plant cell is 0.00001275 m

(v) Thickness of a thick paper is 0.07 mm

Q. Question 3(i)
Express the number appearing in the following statements in standard form:

1 m i c r o n i s e q u a l t o \frac{1}{1000000} m,

Question 3(ii)
Express the number appearing in the following statements in standard form:
Charge of an electron is 0.000,000,000,000,000,00016 coulomb.

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Expressing Numbers in Standard Form

Standard VII Mathematics

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Question 3(iii) Express the number appearing in the following statements in standard form: Size of bacteria is 0.0000005 m.

Size of bacteria is 0.0000005 m =0.0000005×107107=5×10−7 m [∵a−m=1am]

Question 3(iii)
Express the number appearing in the following statements in standard form:
Size of bacteria is 0.0000005 m.

Size of bacteria is 0.0000005 m
$= 0.0000005 \times \frac{10^{7}}{10^{7}} = 5 \times 10^{- 7} m [∵ a^{- m} = \frac{1}{a^{m}}]$