Q. 2 A

# Write the following numbers in decimal form.

3.25 × 10^{-6}

Answer :

The given number is 3.25 × 10^{-6}.

In this number the decimal number is 3.25

Now we have to move the decimal point the number of places specified by the power of 10:to the right if positive to the left if negative. Add zeros if necessary. Rewrite the number in decimal form.

Here power of 10 i.e. n is - 6.

So, the number in decimal form is 0.00000325

Rate this question :

Without actual division, find which of the following rational numbers have terminating decimal expansion.

i. ii.

iii. iv.

Tamilnadu Board Math Term-IWrite the following numbers in decimal form.

3.25 × 10^{-6}

Obtain the equivalent exponential form of the following.

Tamilnadu Board Math Term-III

Find the value of the following

Tamilnadu Board Math Term-III

Write the following numbers in decimal form.

1.86 × 10^{7}

Solve the following equations.

Tamilnadu Board Math Term-III

Convert the following rational numbers into decimals and state the kind of decimal expansion.

i. ii.

iii. iv.

v. vi.

vii. viii.

Tamilnadu Board Math Term-IObtain the equivalent logarithmic form of the following.

3^{5} = 243

Prove the following equations.

Tamilnadu Board Math Term-III

Prove the following equations.

log_{5}0.00125 = 3 - 5log_{5}10