Write the following numbers in decimal form.

9.87 × 10⁹

The given number is 9.87×10⁹

In this number the decimal number is 9.87

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 9.

So, the number in becomes 9870000000.00

Therefore,the number in decimal form is 9870000000.