①1997×19961996﹣1996×19971997
②
③3.672÷0.08÷ +3 ×3.95÷0.1-33 ÷2
④(1+ + + )×( + + + )-(1+ + + + )×( + + )
⑤ +( + )+( + + )+( + + + )+......+( + + +......+ )
①216÷(18×6)
② × + ÷
③( - )× ×36
④125%×2.5×3.2
⑤4.67-(0.67+2.98)
⑥ ÷[2÷( - )]
①26×15﹣200
②8×4×12.5×0.25
③×+
④12÷[()×]