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4.8x0.2+48x0.48简便方法?

4.8x0.2+48x0.48 =48x0.02+48x0.48 =48x(0.02+0.48) =48x0.5 =24

(10-0.2)x0.48用简便方法算 =10x0.48-0.2x0.48 =4.8-0.096 =4.704

原式 =4.8x10x0.39+0.39x2 =48x0.39+0.39x2 =(48+2)x0.39 =50x0.39 =19.5

0.56x3.2+5.6 x0.48 +56x 0.0 =0.56x3.2+5.6 x0.48 =0.56x(3.2+10 x0.48) =0.56x(3.2+4.8) =0.56x8 =4.48

4.8x0.87+2.3x0.48-0.12x4怎么巧算 =0.48x8.7+2.3x0.48-0.48 =(8.7+2.3-1)x0.48 =10x0.48 =4.8

2.46x0.32 2.46×0.48的简便计算答案 2.46x0.32 2.46×0.48 =2.46*(0.32+0.48) =2.46*0.8 =1.968

0.32+0.48×8.5=0.16×2+0.16×3×8.5=0.16×(2+3×8.5)=0.16×27.5=4.4

解:4.82x0.59+4.1x0.482 =4.82x0.59+0.41x10x0.482 =4.82x0.59+0.41x4.82 =4.82x(0.59+0.41) =4.82x1 =4.82

是不是给错小数点了 这题简算不了 1.2×0.24+0.48×24 =0.012×24+0.48×24 =0.492×24 =11.808

4.8*0.87+2.3*0.48-0.12*4 =0.48*8.7+2.3*0.48-0.12*4 =0.48*(8.7+2.3)-0.48 =0.48*(8.7+2.3-1) =0.48*10 =4.8

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