(1–×)÷ [(1–)×]÷4
[(1–)×]÷4 ++
(–)÷(+) [1–(+)]÷3.5
25÷(–) +–
–(+) ×–
[1–(+)]÷ –×÷3
0.92×1.41+0.92×8.59 ×-×1.3×11.6-1.6×1.3 ×11.6+18.4×
13×÷ 29÷×15.68+(5.39+4.32) 19.68-(2.97+9.68) 7+(-) 5-(-)
1-- 41.06-19.72-20.287-3+ 8+2-11+7+3 700÷14÷518.6÷2.5÷0.4 1.06×2.5×4
102×7.3÷5.1 17+-7
×3÷×3 25×7×434÷4÷1.7 1.25÷×0.8
1.3×11.6-1.6×1.3 1--
(48×75×81)÷(24×25×27) 7.5×2.3+1.9×2.55-(-) 19.68-(2.97+9.68)
“※”表示一种新运算符号,含义是:x※y=+ ,已知2※1=,则2004※2005的值是多少?
×7+×7