13.5÷[1.5×(1.07+1.93)];
÷[( + )× ];
(0.265×3 +3 ×0.735)×54.
①4.65﹣2.55﹣1.45
②6.4÷(0.3×2+0.2)
③6.5×99
④2.2×0.25+2.8×0.25.
①47.86×11﹣47.86
②2.25×1.8+77.5×0.18
③7.28﹣(1.28+0.25)
④14÷〔 ﹣( + )〕
①190+[12﹣0.38×(16.4+8.6)]
②8.3×2.5+31.7×2.5
③1.25×96
④(120+23)×5+182÷13.
1.45×6.5+0.55×6.5
0.8×0.94×12.5=
0.81+9=0.36+0.9=1+0.25=5.1+0.17=
63+90=88÷0.22=0.78+0.6=1.1x99+1.1=
①1.7×8.3+1.7×1.7
②1.01×101﹣1.01
③6.5×2.8+7.2
④13.5×4.28﹣13.5×3.28
⑤2.5×7.2×0.8
35个0.1350个0.01
11÷
第二季度的天数第三季度的天数
1.6×(3-0.2)1.6×3-0.2