Question

Помогите решить: а) 0.68 *34 б) 3.212 : 45 в) 56 *24.6

Answer 1

а) $0,68cdotfrac{3}{4}=frac{0,68cdot3}{4}=frac{2,04}{4}=frac{51}{100}=0,51$

 

б) $3,212:frac{4}{5}=3frac{212}{1000}:frac{4}{5}=frac{3212}{1000}:frac{4}{5}=frac{3212}{1000}cdotfrac{5}{4}=frac{803}{200}=4frac{3}{200}=4, 015$

 

в) $frac{5}{6}cdot24,6=frac{5cdot24,6}{6}=frac{123}{6}=20frac{1}{2}=20,5$

Answer 2

а) 0.68*3/4=68/100*3/4=204/400=51/100=0,51

б) 3,212:4/5=3212/1000:4/5=3212/1000*5/4=16060/4000=803/200=4 3/200

в) 5/6*24,6=5/6*246/10=1230/60=41/2=20 1/2