问题
解答题
321+168+79
125×16
(25×17)×4.
答案
(1)321+168+79
=321+79+168
=400+168
=568;
(2)125×16
=125×(8×2)
=125×8×2
=1000×2
=2000;
(3)(25×17)×4
=25×4×14
=100×17
=1700.
321+168+79
125×16
(25×17)×4.
(1)321+168+79
=321+79+168
=400+168
=568;
(2)125×16
=125×(8×2)
=125×8×2
=1000×2
=2000;
(3)(25×17)×4
=25×4×14
=100×17
=1700.