Question

1) CALCULEAZA. DAU COROANA. b) 406-4×[3×(30-18÷6÷3)] c) 832:8+[40+8×(100÷5-72÷4)] d) 25+6×[107-100÷(8-3)]-9×19

Answer 1

b) 406 - 4 × [ 3 × ( 30 - 18 : 6 : 3 ) ]
= 406 - 4 × [ 3 × ( 30 - 3 : 3 ) ]
= 406 - 4 × [ 3 × ( 30 - 1 ) ]
= 406 - 4 × ( 3 × 29 )
= 406 - 4 × 87
= 406 - 348
= 58

c) 832 : 8 + [ 40 + 8 × ( 100 : 5 - 72 : 4 ) ]
= 104 + [ 40 + 8 × ( 20 - 18 ) ]
= 104 + ( 40 + 8 × 2 )
= 104 + ( 40 + 16 )
= 104 + 56
= 160

d) 25 + 6 × [ 107 - 100 : ( 8 - 3 ) ] - 9 × 19
= 25 + 6 × ( 107 - 100 : 5 ) - 171
= 25 + 6 × ( 107 - 20 ) - 171
= 25 + 6 × 85 - 171
= 25 + 510 - 171
= 535 - 171
= 364.