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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

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

解: 0.48+0.52÷0.2 =0.48+2.6 =3.08

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

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

用简便方法计算 15.2一1.2÷0.16x0.48 =15.2一1.2x(0.48÷0.16) =15.2一1.2×3 =15.2-3.6 =11.6

(3.48-0.48)+0.2 =3+0.2 =3.2

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

x-0.48x=7.28 解:0.52x=7.28 0.52x÷0.52=7.28÷0.52 x=14

把26化成2.6乘以10

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