计算,能简算的要简算 ① 588÷21﹣1.6×3.5 ② 25×125×16 ③ 3.6﹣2.8+7.4﹣6.2 ④8.6÷+1.4×2.7 ⑤ 4÷﹣÷4 ⑥ ÷[(+)÷].
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
12.06+5.07+2.94 30.34+9.76-10.34
1.3×11.6-1.6×1.3 1--