Write the usual for of 2 times-10-5 - 5 times- 10-4 - 2 times- 10-3 - 8 times- 10-2 - 9 times- 10 - 0 -

#160; #160; #160; #160;2 #215;105 #160;+ #160;5 #215;104 #160;+ #160;2 #215;103 #160;+ #160;8 #215;102+9 #215;100=200000+50000+ ...

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Standard VIII

Mathematics

Inter Conversion between Standard and Normal Forms

Write the usu...

Question

Write the usual for of 2×10^5 + 5 × 10^4 + 2× 10^3 + 8× 10^2 + 9 × 10 ^ 0 .

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Solution

$2 \times 10^{5} + 5 \times 10^{4} + 2 \times 10^{3} + 8 \times 10^{2} + 9 \times 10^{0} = 200000 + 50000 + 2000 + 800 + 9 = 252809$

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Write the numeral whose expanded form is given below:
(i) $6 \times 10^{4} + 3 \times 10^{3} + 0 \times 10^{2} + 7 \times 10^{1} + 8 \times 10^{0}$
(ii) $9 \times 10^{6} + 7 \times 10^{5} + 0 \times 10^{4} + 3 \times 10^{3} + 4 \times 10^{2} + 6 \times 10^{1} + 2 \times 10^{0}$
(iii) $8 \times 10^{5} + 6 \times 10^{4} + 4 \times 10^{3} + 2 \times 10^{2} + 9 \times 10^{1} + 6 \times 10^{0}$

Find the number from each of the following expanded forms:

(a) 8 × 10⁴ + 6 × 10³ + 0 × 10² + 4 × 10¹ + 5 × 10⁰

(b) 4 × 10⁵+ 5 × 10³+ 3 × 10²+ 2 × 10⁰

(d) 9 × 10⁵ + 2 × 10² + 3 × 10¹

Q. Write the number :

4 \times 10^{6} + 8 \times 10^{5} + 6 \times 10^{4} + 4 \times 10^{3} + 4 \times 10^{2} + 6 \times 10 + 9 \times 10^{0}

Q. Express the number :

8 \times 10^{5} + 7 \times 10^{4} + 5 \times 10^{3} + 4 \times 10^{2} + 6 \times 10^{1} + 9 \times 10^{0}

Q. Find the value of

(2 \times 10^{4}) + (5 \times 10^{3}) + (4 \times 10^{2}) + (3 \times 10^{1}) + (6 \times 10^{0}) + (7 \times 10^{- 1}) + (8 \times 10^{- 2}) + (9 \times 10^{- 3})

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Write the usual for of 2×10^5 + 5 × 10^4 + 2× 10^3 + 8× 10^2 + 9 × 10 ^ 0 .

2×105 + 5×104 + 2×103 + 8×102+9×100=200000+50000+2000+800+9=252809

$2 \times 10^{5} + 5 \times 10^{4} + 2 \times 10^{3} + 8 \times 10^{2} + 9 \times 10^{0} = 200000 + 50000 + 2000 + 800 + 9 = 252809$