(1)25×1.25×32, =25×1.25×4×8, =(25×4)×(1.25×8), =100×10, =1000; (2)73.8×16-7.38×60, =7.38×160-7.38×60, =7.38×(160-60); =7.38×100, =738; (3)1.25+
=1.25+1.25×0.4+1.25×1.6, =1.25×(1+0.4+1.6), =1.25×3, =3.75. |
25×1.25×32
=25*5/4 *4*8
=125*8
=1000
73.8×16-7.38×60
=73.8×16-73.8×6
=73.8*10
=738