你找到巧算的方法了吗? (1)97×2000-96×2001 (2)(999×999+999)×100 (3)1.25×0.25×0.05×64 (4)9.728÷3.2÷2.5 (5)9876×9876-9875×9877 (6)38.4×187-15.4×384+3.3×16 (7)8.46×36+84.6×6.4 (8)3333.3×12340-111110×370.2 (9)0.1999+1.999+19.99+199.9 (10)(0.1 2 +0.2 2 +0.3 2 +0.4 2 ) 2 ÷(0.1 3 +0.2 3 +0.3 3 +0.4 3 ) 3