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9.5x2.8 8.2x9.5%9.5能不能简算

能简算 9.5x2.8+ 8.2x9.5-9.5 =9.5×(2.8+8.2-1) =9.5×10 =95

(4.5x9.9+5.5x9.9)x2.8 =[(4.5+5.5)×9.9]×2.8 =10×9.9×2.8 =99×2.8 =(100-1)×2.8 =100×2.8-1×2.8 =280-2.8 =277.2

(4.5x9.9+5.5x9.9)x2.8 =[(4.5+5.5)×9.9]×2.8 =[10×9.9]×2.8 =99×2.8 =277.2 2.4x1.5+3.6÷1.5 =3.6+2.4 =6

2.8x9+9.8x1+(2.8+9.8)x0.5

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