BDG Calcul CM2 2012 - Bout de Gomme

Preview:

Citation preview

!"

!"#$%&"#'()*+,-!,

,

,

Boutdegomme.

"

./"00'#'12,0*+,21&34*+,*2#'*4+

-"56)5,7

81)4,6"56)5*4,,############"""

! $%"&'()"##############*"+',"%-./0',1"-%")0-(2'03")-(4-(0,"5'".6.'"07,(5)3)*,,

9:*&;5*,<,89:";"<<:";"<=<">"<<:";"89:";"<=<">"#####",

!,, $%"&'()"7?35'.'%)"##########"+',"%-./0',"&-(0"&0@2@57?@'0"A'0)3@%,"A35A(5,"&5(,",@.&5',"B"'CC'A)('0*",

9:*&;5*,<,=>?,@,AB?,@,=>>,C,=>?,@,=>>,@,AB?,C,DDDDD,,

!,, D(3%+"-%"&-,'"(%'"3++@)@-%1"@5"C3()"#########""5',"%-./0',"'%"&30)3%)"+',"(%@)7,*"

,E35A(5'0"#1)E1)4+"##############*"323%)"+'"&-,'0"5F3++@)@-%*,,

9:*&;5*,<,AFG,@,?,H=>,@,77,G=A,I404*,0*,J4"20*)4,<,,########################*,,

81+*,*#,*KK*6#)*,6*+,"00'#'12+L,3G <"8<<";"98<";"!"H=<"/G 9"!!9";"8=";"9:":!H";"I"AG <"=:9";"J"8::";"K=!";"88"+G ="9JJ";"<"9"!:";"J=:";"8J"'G I=:";"=";"K"J":I"

" " m c d u

" " " J" I" <";" " 8" H" 9" :";" !" !" <" 9" J"" " " " " "

"

a b

c d e

<"

!"#$%&"#'()*+,-!,

,

,

Boutdegomme.

./"00'#'12,0*+,21&34*+,*2#'*4+

-"56)5,7

81)4,6"56)5*4,,############"""

! $%"&'()"##############*"+',"%-./0',1"-%")0-(2'03")-(4-(0,"5'".6.'"07,(5)3)*,,

9:*&;5*,<,89:";"<<:";"<=<">"<<:";"89:";"<=<">"#####",

!,, $%"&'()"7?35'.'%)"##########"+',"%-./0',"&-(0"&0@2@57?@'0"A'0)3@%,"A35A(5,"&5(,",@.&5',"B"'CC'A)('0*",

9:*&;5*,<,=>?,@,AB?,@,=>>,C,=>?,@,=>>,@,AB?,C,DDDDD,,!,, D(3%+"-%"&-,'"(%'"3++@)@-%1"@5"C3()"#########""5',"%-./0',"'%"&30)3%)"+',"(%@)7,*"

,E35A(5'0"#1)E1)4+"###############*"323%)"+'"&-,'0"5F3++@)@-%*,,

9:*&;5*,<,AFG,@,?,H=>,@,77,G=A,I404*,0*,J4"20*)4,<,,########################*,,

une somme

changer l’ordre

regrouper

" " m c d u

" " " !J" !I" <";" " <8" H" 9" :";" !" !" <" 9" J"" !" I" :" K" :"

bien aligner

l’ordre de grandeur

1 000 + 4 000 + 10 000 = 15 000

81+*,*#,*KK*6#)*,6*+,"00'#'12+L,CG <"8<<";"98<";"!"H=<"?G 9"!!9";"8=";"9:":!H";"I"LG <"=:9";"J"8::";"K=!";"88"@G ="9JJ";"<"9"!:";"J=:";"8J"4G I=:";"=";"K"J":I"

" " !<" 8" <" <"" ;" " 9" 8" <"

" ;" !" H" =" <"

" " =" K" H" I""

a " " 9" !" <!" 9"" " " " 8" ="

;" 9" :" :" !" H"

;" " " " " I"

" 9" 9" !" K" =""

b

" " <" <=" :" 9"" " J" 8" :" :"

;" " " K" =" !"

;" " " " 8" 8"

" !" !" I" K" H""

c " " =" !9" !J" J"" " <" 9" !" :"

;" " " J" =" :"

;" " " " 8" J"

" " K" H" K" I""

d

" " " I" !=" :"" ;" " " " ="" ;" !K" J" :" I"

" " J" =" 9" :""

e

Recommended