Division posée CM2 - CM1 (par un nombre à 2 chiffres avec reste) - Cycle 3 - Maths

Division posée CM2 - CM1 (par un nombre à 2 chiffres avec reste) - Cycle 3 - Maths

Introduction to Division with Two Digits

In this video, the teacher explains how to perform division with two digits as the divisor. The goal is to provide a technique that works, even if it may differ from what students have learned in school.

Division Process

  • There are multiple techniques for performing division with two digits as the divisor.
  • The teacher starts by explaining the process using an example: 5498 divided by 23.
  • Begin by attempting to divide the first digit of the dividend (5) by the divisor (23). Since 23 is larger than 5, no division is possible at this point.
  • Find the closest multiple of 23 that does not exceed 54. In this case, it is 46 (23 multiplied by 2).
  • Subtract this multiple from 54 and write down the result (8).
  • Bring down the next digit of the dividend (9) and repeat the process.
  • Continue dividing until there are no more digits in the dividend.

Verification and Practice

  • To verify if the calculation is correct, multiply the divisor by the quotient and add any remainder. The result should equal the dividend.
  • Encourage viewers to practice on their own using additional examples provided or creating their own divisions on an erasable surface.

Conclusion

  • It's important to practice and memorize these techniques for successful division with two-digit divisors.
  • Additional exercises can be found on maitrelucas.fr for further practice and reinforcement.