Cách 1:
A, 35+46-125+24+57
=(46+24)+(35-125)+57
=70-90+57
=-20+57
=37
B,93-(-48)-(+63)+(-28) +(-70)-30
=93+48-63-28-70-30
=(48-28)+(93-63)-(70+30)
=20+30-100
=50-100
=-50
Cách 2:
A, 35+46-125+24+57
=81-125+24+57
=-44+24+57
=-20+57
=37
B,93-(-48)-(+63)+(-28) +(-70)-30
=141-(+63)+(-28)+(-70)-30
=78+(-28)+(-70)-30
=50+(-70)-30
=-20-30
=-50
Cách 3:
B,93-(-48)-(+63)+(-28) +(-70)-30
=93+48-63-28-70-30
=141-63-28-70-30
=78-28-70-30
=50-70-30
=-20-30
=-50