32+6.4+68+3.6 27+0.4-8.27 18.51-9.03-0.97
①14.37+2.75-5.63
②90.3-2.54-11.46
③2.5+1.32+2.68
①6000÷25
②73.2+27.3+72.7
③42.5-16.41-3.59
④29.46-(5.8-0.08)
⑤65×[(500-32)÷18]