tolong jawab sama caranya

1.548+274-469
822-469=353(c.)
2.120:(-8)×(-12)
-15×(-12)=180(d.)
3.12°c-15°c=-3°c (b.)
4.fpb=2×3(a.)
5.kpk=2×2×3×5=60 (d.)
6.132+272
169+729=898(d.)
7.17/25=0,68
13/20=0,65
0,64=0,64
66%=0,66
urutan dari yang terkecil=0,64;13/20;66%;17/25(d.)
8.13/6+7/4=26/12+21/12=47/12=311/12 (c.)