1:56×51+56×48+56
=56×(51+48+1)
=56×100
=5600
2:125×25×32
=125×25×8×4
=(125×8)×(25×4)
=1000×100
=100000
125×48
=125×8×6
=1000×6
=6000
514+189-214
=514-214+189
=300+189
=489
1:56×51+56×48+56
=56×(51+48+1)
=56×100
=5600
2:125×25×32
=125×25×8×4
=(125×8)×(25×4)
=1000×100
=100000
125×48
=125×8×6
=1000×6
=6000
514+189-214
=514-214+189
=300+189
=489