Organisation de calculs/Exercices/Calcul mental

<quiz> { Sachant que $3425/25=137$ compléter sans calculs : | type="{}" } $a=3425÷2500=$ { 34.25 _10 }$÷25=$ { 1.37 _10 } $b=0,3425÷250=$ { 0.03425 _10 }$÷25=$ { 0.00137 _10 } $c=0,003425÷0,00025=$ { 342.5 _10 }$÷25=$ { 13.7 _10 } $d=3425000÷2,5=$ { 34250000 _10 }$÷25=$ { 1370000 _10 } $e=3425000÷2500=$ { 34250 _10 }$÷25=$ { 1370 _10 } $f=34,25÷0,0025=$ { 342500 _10 }$÷25=$ { 13700 _10 } </quiz>