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Efectueaza exercitiile,respectand ordinea operatiilor si semnificatia parantezelor. a) 1 000+2×(25+52)= b) 3 000 -(2 100 -20 ×100) :10= c) 6 ×( 30 ×50 -24 × 24) -800=​

Răspuns :

Alextica2008

a) 1000+2×(25+52)=

=1000+2×77=

=1000+154

=1154

b) 3000-(2100-20×100)÷10=

=3000-(2100-2000)÷10=

=3000-100÷10=3000-10=2990

c) 6×(30×50-24×24)-800=

=6×(1500-576)-800=

=6×924-800=

=5544-800=

=4744

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