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www.maurimath.net 1 Horma Hamoud A = 8
3 – 5
3 ÷2021 = 83 – 53××××21
20 ; (la multiplication est prioritaire sur la soustraction).
A = 8 ×××× 4
3 ×××× 4 – 5×××× 21 3 ×××× 4 ××××5
A = 32 – 21 12
A 11
=12
==
=
A = 2 3 – 5
3××××21 15 = 2
3 – 5 ×××× 21
3 ×××× 15 , (Priorité de la multiplication)
A = 2
3 – 5 ×××× 3 ×××× 7 3 ×××× 3 ×××× 5 A = 2
3 – 7 3
A 5
= −3
= −= −
= −
Q = 2 ××××3
7 5 3−−−− 1
= 6 7÷÷÷÷2
3
= 6 7××××3
2
= 2 ×××× 3 ×××× 3 7 ×××× 2
9
=7
=
==
Corrigés 4AS Calcul numérique - Fractions
3 2 1
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1 1
R 1 1
1 1
1 6 1
2 3 3
R 1 1 1
5 3
= =
= =
= =
= =
− −
−− −−
− −
−−
−−
−
−
−
−
===
=
−
−
−
−
R
1 1 3
5
= =
= =
− − −
−
R
1 5 3
5
=
= =
= − − − −
R
1 2 5
=
= =
=
5= 2
=
=
=
2 3
A= 4 3
7 14
− + × ÷
− + × ÷
− + × ÷
− + × ÷
A
4 7 3 2 14
= 7 3
− × + ×
− × + ×
− × + ×
− × + ×
× ×
× ×
A ( 28 + 6 ) 2 7
= 7 3
− ×
− ×
− ×
− ×
×
×
×
×
A 22 2 7
7 3
− ×
− ×
− ×
− ×
= ×
= ×
= ×
= ×
A= 22 2
− ×3
− ×
− ×
− ×
A= 44
− 3
−
−
− 4
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2 2
B 1 1
3 3
= − ÷ +
= − ÷ +
= − ÷ +
= − ÷ +
3 2 3 2
B 3 3 3 3
= − ÷ +
== −− ÷÷ ++
= − ÷ +
1 5 B==== 3÷÷÷÷3
1 3 B==== 3××××5 1
=5
==
=
Corrigé
