3时15分 小时
×8= ÷0.5= ÷60%=
6.8×10%= 2- = 1.2+ = 36×75%=
= 32-23=
①97×
② ×58+ ×43-
③
④17.34-(7.34-2.6)
⑤
⑥(5.7×40%+6.3× )÷3