Réponse:
Bonjour.
A) 15 × 7 = 105
B) 98 × 12 = 1176
C) 999 × 45 = 44 955
D) 1001 × 73 = 73 073
Bonjour,
A)
10*7 + 5*7
= 70 + 35
= 105
B)
90*10 + 90*2 + 8*10 + 8*2
= 900+180+80+16
= 1080 + 96
= 1 176
C)
1000*45 - 1*45
= 45 000 -45
= 44 955
D)
1 000* 73+1 *73
= 73 000+73
= 73 073
