1) 100-[(64-48).5+88]:28
=100-[16.5+88]:28
=100-[80+88]:28
=100-168:28
=100-6
=94
2)6^2.48+58.6^2-6
=6^2.(48+58)-6
=36.106-6
=3816-6
=3810
3)(-2021)+2020+(-2022)
=-1+(-2022)
=-2023
4)198+232-98-32
=(198-98)+(232-32)
=100+200
=300
5)-15-(-13+30)
=-15+13-30
=-2-30
=-32
6)10^2-[60:(5^6:5^4-3.5)]
=100-[60:(5^2-3.5)]
=100-[60:(25-3.5)]
=100-[60:(25-15)]
=100-[60:10]
=100-6
=94