Evaluate-i 23- 42ii 23- 52

(i) 2^3× 4^2 it can be written as =2× 2× 2× 4× 4 On further calaculation =8×16 =128 (ii) 2^3×5^2 It can be written as =2× 2× 2 × 5× 5 On further calculation ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard VIII

Mathematics

Exponent and Powers

Evaluate:i 23...

Question

Evaluate:
(i) $2^{3} \times 4^{2}$
(ii) $2^{3} \times 5^{2}$

Open in App

Solution

(i) $2^{3} \times 4^{2}$

it can be written as
$= 2 \times 2 \times 2 \times 4 \times 4$
On further calaculation
$= 8 \times 16$
$= 128$

(ii) $2^{3} \times 5^{2}$

It can be written as
$= 2 \times 2 \times 2 \times 5 \times 5$
On further calculation
$= 8 \times 25$
$= 200$

Suggest Corrections

Similar questions

Q. Evaluate:
(i)

{(\frac{5}{9})}^{- 2} \times {(\frac{3}{5})}^{- 3} \times {(\frac{3}{5})}^{0}

(ii)

{(\frac{- 3}{5})}^{- 4} \times {(\frac{- 2}{5})}^{2}

(iii)

{(\frac{- 2}{3})}^{- 3} \times {(\frac{- 2}{3})}^{- 2}

Q. Simplify:

\frac{23}{2^{3} \times 5^{2}}

Q. Evaluate:
(i) 4⁻³
(ii)

{(\frac{1}{2})}^{- 5}

(iii)

{(\frac{4}{3})}^{- 3}

(iv)

{(- 3)}^{- 4}

(v)

{(\frac{- 2}{3})}^{- 5}

Q. Evaluate:
(i)

{(\frac{5}{3})}^{2} \times {(\frac{5}{3})}^{2}

(ii)

{(\frac{5}{6})}^{6} \times {(\frac{5}{6})}^{- 4}

(iii)

{(\frac{2}{3})}^{- 3} \times {(\frac{2}{3})}^{- 2}

(iv)

{(\frac{9}{8})}^{- 3} \times {(\frac{9}{8})}^{2}

Q. Write the following rational number in decimal form

\frac{23}{2^{3} \cdot 5^{2}}

Join BYJU'S Learning Program

Evaluate: (i) 23×42 (ii) 23×52

(i) 23×42 it can be written as =2×2×2×4×4 On further calaculation =8×16 =128 (ii) 23×52 It can be written as =2×2×2×5×5 On further calculation =8×25 =200

Evaluate:
(i) $2^{3} \times 4^{2}$
(ii) $2^{3} \times 5^{2}$

(i) $2^{3} \times 4^{2}$

it can be written as
$= 2 \times 2 \times 2 \times 4 \times 4$
On further calaculation
$= 8 \times 16$
$= 128$

(ii) $2^{3} \times 5^{2}$

It can be written as
$= 2 \times 2 \times 2 \times 5 \times 5$
On further calculation
$= 8 \times 25$
$= 200$