① ÷[(25%+ )×8]
②91÷8÷1.25+32.6
③4.5×436+0.55×43.6
④1210÷[35×( + )]
⑤101×110-73-37
⑥ ÷[ ÷( - )]
56 0.97 0 -0.02 +63%
①
②x:21=:
③160×25%-1.3x=17.9
②
③7.85×101
④
①10÷8-×3
②26.2-2.2-7.8
③+3.62++19.38
④9.7×3.75+2.3×
①2÷= ÷ = 10÷2
②2÷=2÷2÷5
③2÷=2×