Question

Calculează, respectând regulile pe care le introduc parantezele în calcule. 125:5+ (13 + 64:2) e 5x (3 600 : 30 - 81: (54:6)] (37 - 18:2):7 + 108:2 1. 128:4+ (2 (2 222:22-22:22)]: 10 6* 9:16 -(13-18:2)] g. 36:9 + 4 x 120 + 6 * (100: 4 - 42:2) d. [(9-6) (8 + 9)] + 100: (4+6) h. 136 + [(63 x 2:6 + 109) * (75:25 + 21:3)]: 10​

Answer 1

Răspuns:

a) 125:5+(13+64:2)=125:5+(13+32)=

=25+45=70

b) (37-18:2):7+108:2=(37-9):7+54=

=28:7+54=4+54=58

c) 6×9:[6-(13-18:2)]=54:[6-(13-9)]=

=54:(6-4)=54:2=27

d)[(9-6)×(8+9)]+100:(4+6)=(3×17)+100:10=

=51+10=61

e) 5×[3600:30-81:(54:6)]=

=5×(3600:30-81:9)=5×(120-9)=5×111=555

f)128:4+[2×(2222:22-22:22)]:10=

=32+[2×(101-1)]:10=32+(2×100):10=

=32+200:10=32+20=52

g) 36:9+4×[20+6×(100:4-42:2)]=

=4+4×[(20+6×(25-21)]=4+4×(20+6×4)=

=4+4×(20+24)=4+4×44=4+176=180

h)126-[(63×2:6+109)×(75:25+21:3)]:10=

=126-[(126:6+109)×(3+7)]:10=

=126-[(21+109)×10]:10

=126-(130×10):10=126-1300:10=126-130=-4