Question

Calcule: a) (+11) . (-52) = b) (– 12) .(-4)= c) (+44) : (+4)= d) (-64) : (+2)= *

Answer 1

Olá! (^_-)

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Regra de sinal :

( - ) ( - ) = +  

( + ) ( + ) = +  

( - ) ( + ) = -  

( + ) ( - ) = -

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${\large \displaystyle \sf {a) \ (+11) \cdot (-52)=}}$

${\large \displaystyle \sf { -(11 \cdot 52)= }}$

${\large \displaystyle \sf { \boxed{\boxed{{\red{-572}}}}}}$

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${\large \displaystyle \sf {b) \ (- 12) \cdot (-4)=}}$

${\large \displaystyle \sf { +(12\cdot4)=}}$

${\large \displaystyle \sf { \boxed{\boxed{{\red{+48}}}}}}$

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${\large \displaystyle \sf {c) \ (+44) \div (+4)=}}$

${\large \displaystyle \sf {+(44\div4)=}}$

${\large \displaystyle \sf { \boxed{\boxed{{\red{+11}}}}}}$

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${\large \displaystyle \sf {d) \ (-64) \div (+2) =}}$

${\large \displaystyle \sf { -(64\div2)= }}$

${\large \displaystyle \sf { \boxed{\boxed{{\red{-32}}}}}}$

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Espero ter ajudado! ❤️