Question

efectueaza exercitiile,respecand ordinea operatiilor,apoi compara rezultatele,5+4:2+8:4+3*6:9 ,
54:6-3*4+5*6*3,45+23*6-70:10,999-12*4:8:6*0,3*8:4+2+6:2+5:5,90:3:6-2*5:10+7*7:7,30:3+17*6+219,999+75:3:5*8:10*0

Answer 1

5 + 4 : 2 + 8 : 4 + 3 × 6 : 9  = 11
= 5 + 2 + 2 + 18 : 9 =
= 9 + 2 =
= 11

54 : 6 - 3 × 4 + 5 × 6 × 3 = 87 
=9 - 12 + 30 × 3 =
= - 3 + 90 =
= 87 

Observatie:  Daca exercitiul este pentru inv. primar vom corecta semnul ,,-" cu semnul ,, +" !

54 : 6 + 3 × 4 + 5 × 6 × 3 = 111
= 9 + 12 + 30 × 3 =
= 21 + 90 
= 111

45 + 23 × 6 - 70 : 10 = 176
= 45 + 138 - 7 =
= 183 - 7 =
= 176 

999 - 12 × 4 : 8 : 6 × 0 = 999
= 999 - 48 : 4 : 6 x 0 =
= 999 - 0 
= 999

3 × 8 : 4 + 2 + 6 : 2 + 5 : 5 = 12 
= 24 : 4 + 2 + 3 + 1 =
= 6 + 6 =
= 12 

90 : 3 : 6 - 2 × 5 : 10 + 7 × 7 : 7 = 11
= 30 : 6 - 10 : 10 + 49 : 7 =
= 5 - 1 + 7 =
= 4 + 7 =
= 11 

30 : 3 + 17 × 6 + 219 = 331
= 10 + 102 + 219 =
= 331 

999 + 75 : 3 : 5 × 8 : 10 × 0 = 999
= 999  + 0 =
= 999