6.7﹣2.3=
100÷0.1=
3.14×22=
3.6×=
350÷68≈
2﹣30%= +25%= 4.23﹣23%= ×=
3+= 4×15%= = +50%=
①(-+)×24
②14.86﹣(6.28+2.36)﹣3.72
③÷[÷(-)]
④2.4×3.6+3.2×4.8
⑤+++......++
⑥××18×24