Question

$(5 \div 0. {2}^{2} + 0.5) \times 2$
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Answer 1

$(5\div 0.2^2+0.5)\times 2=$

$=10\div 0.2^2+1$

$=10\div 0.04+1$

$= 10\div (4\div 100)+1$

$= 10 \div 4\times 100+1$

$=1000\div 4+1$

$= 250+1$

$=251$