1. а) 3/4 + 0,123=..б) 0,3 - 1/6=...в)0,15 * 3/5=....г)6/25 : 0,12=...

а) [latex] \frac{3}{4} + \frac{123}{1000} = \frac{750+123}{1000} = \frac{873}{1000} [/latex] б) [latex] \frac{3}{10} - \frac{1}{6} = \frac{9-5}{30} = \frac{4}{30} = \frac{2}{15} [/latex] в) [latex]0,15* \frac{3}{5}= \frac{15*3}{100*5}= \frac{9}{100} [/latex] г) [latex] \frac{6}{5} : \frac{12}{100} = \frac{6*100}{25*12} =2[/latex]