①2.523.6=
②9.9101=
③1.7×4.2+1.7×5.8=
④3.6×2.8=
⑤7.08÷0.8÷1.25
⑥15.311(商用循环小数表示)
①0.25×1.56×4
②0.74×99+0.74
③7.5÷1.5×1.3
④2.74÷0.125÷8
⑤12.5×7.2
⑥27.3÷[(7.4-6.8)×1.3]
①25.2÷12+2.9
②43.5÷15-1.45
③1.87×3.05+8.13×3.05
④1.25×0.45×0.8
①(+-)÷
②12-(1+2)
③5÷[(+)×]
④2.5×3.2×0.125
⑤0.125×+×8.25+12.5%
⑥÷﹣