By writing each number correct to one significant figure, estimate the value of​ 21.86-9.64÷2.47​

The right answer is "12.22". A further explanation is provided below in the explanation segment.

Explanation:

The given expression is:

⇒  21.86 - 9.64 ÷ 2.47​

By using the BODMAS (Bracket of division, multiplication, addition and subtraction) rule,

On applying division, we get

=  

=  

On applying subtraction, we get

=  

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