如题所述
第1个回答 2022-07-27
(1)24×125
=3×8×125
=3×(8×125)
=3×1000
=3000;
(2)16×25
=4×4×25
=4×(4×25)
=4×100
=400;
(3)125×32×25
=(125×8)×(4×25)
=1000×100
=100000;
(4)45×202-45
=45×(200+2)-45
=45×200+45×2-45
=9000+90-45
=9045.
=3×8×125
=3×(8×125)
=3×1000
=3000;
(2)16×25
=4×4×25
=4×(4×25)
=4×100
=400;
(3)125×32×25
=(125×8)×(4×25)
=1000×100
=100000;
(4)45×202-45
=45×(200+2)-45
=45×200+45×2-45
=9000+90-45
=9045.