
计算下面各题. 3.2×2.5+7.28
计算下面各题.3.2×2.5+7.280.75×18-0.153.8+2.74×1.55.5×17.3+6.7×5.5....
计算下面各题. 3.2×2.5+7.28 0.75×18-0.15 3.8+2.74×1.5 5.5×17.3+6.7×5.5.
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(1)3.2×2.5+7.28 =8+7.28 =15.28; (2)0.75×18-0.15 =13.5-0.15 =13.35; (3)3.8+2.74×1.5 =3.8+4.11 =7.91; (4)5.5×17.3+6.7×5.5 =5.5×(17.3+6.7) =5.5×24 =132. |
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