Tính a) 0,75 - 5/6 + 1 1/2; b) 3/7 + 4/15 + (-8/21) + (-0,4);

18/27

Tính

a) 0,75−56+112;

b) 37+415+−821+(−0,4);

c) 0,625+−27+38+−57+123;

d) (−3)⋅−3821⋅−76⋅−319;

e) 1118:229⋅85;

g) −45⋅58:−2512.

Nhập câu trả lời ở đây

0/3000 ký tự

Giải thích

a) 0,75−56+112=75100−56+32=34−56+32=912−1012+1812=1712.

b) 37+415+−821+(−0,4)=37+−821+415+−410=921+−821+415+−25=121+415+−615=121+−215=5105+−14105=−9105=−335

c) 0,625+−27+38+−57+123=6251000+−27+38+−57+53=58+−27+38+−57+53=58+38+−27+−57+53=1+(−1)+53=53

d) (−3)⋅−3821⋅−76⋅−319=(−3).(−38).(−7).(−3)21.6.19=(−3).(−7).(−38).(−3)21.6.19=3.7.2.19.33.7.2.3.19=1

e) 1118:229⋅85=1118⋅922⋅85=11.9.89.2.11.2.5=25

g) −45⋅58:−2512=−4.55.8:−2512=−12:−2512=−12.12−25=625