Calcul mental (additions)

1. Calculer : 1 + 11 + 111 +1 111 + 11 111 =
   • 12 355
   • 12 345
   • 12 365
   • 12 375
2. 5 + 55 + 555 + 5 555 + 55 555 =
   • 51 725
   • 61 725
   • 72 725
   • 41 725
3. 9 + 99 + 999 + 9 999 + 99 999 =
   • 110 105
   • 110 805
   • 111 105
   • 112 105
4. 11 111 + 22 222 + 33 333 + 44 444 =
   • 111 110
   • 110 110
   • 112 110
   • 113 110
5. 1,11 + 1,111 + 1,1111 =
   • 3,3331
   • 3,3341
   • 3,3321
   • 3,3351
6. 1,11 x 9,99 =
   • 11,0879
   • 11,0889
   • 11,0899
   • 11,0869
7. 9,99 : 4,44 =
   • 2,15
   • 2,25
   • 2,35
   • 2,45

• Created 27/10/2023
• Published 27/10/2023
• Amended 27/10/2023
• Difficulty Average
• Questions 7
• Theme Scientific

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