`1,2 xx 0,1 = 0,12 =3/25 `
`4,6 xx 0,001 =23/5000`
`781,5 xx 0,01 =7,815 = 1563/200`
`15,4 xx 0,01 =0,154 =77/500`
`45,82 xx 0,1 =4,582=2291/500`
`15632 xx 0,001 =15,632 = 1954/125`
\(1,2\times0,1=0,12=\dfrac{3}{25}\\ 4,6\times0,001=0,0046=\dfrac{23}{5000}\\ 781,5\times0,01=7,815=\dfrac{1563}{200}\\ 15,4\times0,01=0,154=\dfrac{77}{500}\\ 45,82\times0,1=4,582=\dfrac{2291}{500}\\ 15632\times0,001=15,632=\dfrac{1954}{125}\)