Bonjour,
18.
a. 127 X 57 + 127 X 43
= 127 X ( 57 + 43 )
= 127 X 100
b. 14 X 3.5 + 6.5 X 14
= 14 X ( 3.5 + 6.5 )
= 14 X 10
c. 13 + 2.6 - 13 X 0.6
= 13 X ( 2.6 -0.6 )
= 13 X 2
d. 29 X 201 - 29
Je ne suis pas sûre de ma réponse
Réponse :
bonsoir,
a=127 * 57 + 127 * 43 = ( 57 + 43 ) * 127 = 100 * 127 = 12700
b= 14 * 3.5 + 6.5 * 14 = ( 3.5 + 6.5 ) * 14 = 10 * 14 = 140
c= 13 * 2.6 - 13 * 0.6 = ( 2.6 - 0.6 ) * 13 = 2 * 13 = 26
d= 29 * 201 - 29 = 29 *201 -29*1 = ( 201 - 1 ) * 29 = 200 * 29 = 5800
good luck !
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Bonjour,
18.
a. 127 X 57 + 127 X 43
= 127 X ( 57 + 43 )
= 127 X 100
b. 14 X 3.5 + 6.5 X 14
= 14 X ( 3.5 + 6.5 )
= 14 X 10
c. 13 + 2.6 - 13 X 0.6
= 13 X ( 2.6 -0.6 )
= 13 X 2
d. 29 X 201 - 29
Je ne suis pas sûre de ma réponse
Réponse :
bonsoir,
a=127 * 57 + 127 * 43 = ( 57 + 43 ) * 127 = 100 * 127 = 12700
b= 14 * 3.5 + 6.5 * 14 = ( 3.5 + 6.5 ) * 14 = 10 * 14 = 140
c= 13 * 2.6 - 13 * 0.6 = ( 2.6 - 0.6 ) * 13 = 2 * 13 = 26
d= 29 * 201 - 29 = 29 *201 -29*1 = ( 201 - 1 ) * 29 = 200 * 29 = 5800
good luck !