Question

1. Calculează, respectând ordinea efectuării operațiilor:
d) 1 000 - [409 x (6: 3) + 56 : 8 x 5] =
e) [(35 : 7 + 21 : 7) x 7+(3 + 9:3+27)] x 7=
f) [(24 x 6 + 39 x 5) - 2] + (2 000-300: 30)=​

Answer 1

d) 1 000 - [409 x (6: 3) + 56 : 8 x 5] =

1000-(409×2+7×5)=

1000-(818+35)=

1000-853=147

e) [(35 : 7 + 21 : 7) x 7+(3 + 9:3+27)] x 7=

[(5+3)×7+(3+3+27)]×7=

(8×7+33)×7=

(56+33)×7=

89×7= 623

f) [(24 x 6 + 39 x 5) - 2] + (2 000-300: 30)=

[(144+195)-2]+(2000-10)=

(339-2)+1990=

337+1990=2327

Answer 2

Explicație pas cu pas:

ღSalutare!ღ

d)1000-[409×(6:3)+56:8×5]=

=1000-(409×2+7×5)=

=1000-(818+35)=

=1000-853=

=147✅

e) [(35:7+21:7)×7+(3+9:3+27)]×7=

=[(5+3)×7+(3+3+27)]×7=

=[8×7+(6+27)]×7=

=(56+33)×7=

=89×7=

=623✅

f) [(24×6+39×5)-2]+(2000-300:30)=

=[(144+195)-2]+(2000-10)=

=(339-2)+1990=

=337+1990=

=2327✅

Succes !!;)