Exercices pour l'entraînement au calcul mental.

Ces exercices seront affinés par le réglage du temps maximum imparti. (Ce réglage se fait au moment de la composition de la feuille de travail WIMS).

\title{Soustractions Séries I}
\language{fr}
\range{-5..5}
\author{Odile Bénassy}
\email{obenassy@free.fr}
\computeanswer{no}
\format{html}
\precision{10000}
 
\text{numbers1=shuffle(6,7,8,9,10,11,12,13,14,15,16,17,18,19)}
\text{numbers2=shuffle(3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19)}
\text{numbers3=shuffle(6,7,8,9)}
\text{numbers=shuffle(\numbers1,\numbers2,\numbers3,\numbers3)}
 
\integer{a1=item(1, \numbers)}
\integer{b1=random(0..\a1)}
\integer{a2=item(2, \numbers)}
\integer{b2=random(0..\a2)}
\integer{a3=item(3, \numbers)}
\integer{b3=random(0..\a3)}
\integer{a4=item(4, \numbers)}
\integer{b4=random(0..\a4)}
\statement{<br>Calculer mentalement :
 
<table>
<tr><td>\a1 - \b1 = \embed{reply 1,2}</td><td width="10">&nbsp;</td>
<td>\a2 - \b2 = \embed{reply 2,2}</td><td width="10">&nbsp;</td>
<td>\a3 - \b3 = \embed{reply 3,2}</td><td width="10">&nbsp;</td>
<td>\a4 - \b4 = \embed{reply 4,2}</td></tr>
</table>
 
}
 
\answer{}{\a1 - \b1}{type=numeric}
\answer{}{\a2 - \b2}{type=numeric}
\answer{}{\a3 - \b3}{type=numeric}
\answer{}{\a4 - \b4}{type=numeric}