用你喜欢的方法计算.3÷﹣÷312×(25%+﹣)(﹣)÷×15+÷.
1-- 41.06-19.72-20.28 7-3+ 8+2- 11+7+3 700÷14÷5 18.6÷2.5÷0.4 1.06×2.5×4
102×7.3÷5.1 17+-7
×3÷×3 25×7×4 34÷4÷1.7 1.25÷×0.8
12.06+5.07+2.9430.34+9.76-10.34
1.3×11.6-1.6×1.3 1--