Question

$66.5 \times {10}^{ - 10} - 9.96 \times {10}^{ - 12}$
Please find its answer.
Chapter ( Exponents)​

Answer 1

TO FIND :-

$66.5 \times {10}^{ - 10} - 9.96 \times {10}^{ - 12}$

SOLUTION :-

$66.5 \times {10}^{ - 10} = 6650 \times {10}^{ - 12}$

$66.5 \times {10}^{ - 10} - 9.96 \times {10}^{ - 12} \\ = 6650 \times {10}^{ - 12} \times - 9.96 \times {10}^{ - 12} \\ taking \: {10}^{ - 12} \: common \: we \: get \: \\ = (6650 - 9.96) \times {10}^{ - 12} \\ = 6640.04 \times {10}^{ - 12}$

$= 6.64004 \times {10}^{ - 12} \\ = 6.64 \times {10}^{ - 12} \: ( \: approximate \: value \: )$

ANSWER :-

$6.64004 \times {10}^{ - 12}$