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0:00

Introduction sur les multiples et diviseurs

0:39

Identifier un multiple

2:12

Identifier facilement les multiples de 2, 3, 5, 9 et 10

3:53

Exercices sur les multiples

4:29

Identifier un divisible

5:36

Exercices sur les diviseurs

6:06

Fiche d’exercices et carte mentale sur les multiples et diviseurs

Passé, présent, futur CP - CE1 - Cycle 2 - Français - Etude de la langue - Grammaire CP

Passé, présent, futur CP - CE1 - Cycle 2 - Français - Etude de la langue - Grammaire CP

Channel: Maître Lucas

Reconnaître et manipuler les euros CP - CE1 - Cycle 2 - Maths

Reconnaître et manipuler les euros CP - CE1 - Cycle 2 - Maths

Channel: Maître Lucas

Ovipare et vivipare CP - CE1 - CE2 - Cycle 2 - Questionner le monde - Le monde du vivant

Ovipare et vivipare CP - CE1 - CE2 - Cycle 2 - Questionner le monde - Le monde du vivant

Channel: Maître Lucas

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going on I would like to play viper fox chicken

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with the class there are

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23 of us and we have to make three teams but

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there are two children who don't have

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a team it's annoying well yes

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it's normal 23 is not divisible by

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three you can't have an

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exact result divisible what does it mean is

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divisible well we're going to see the

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divisors is multiple and number does

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n't move

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[Music ]

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to find the multiples of a number

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you just have to multiply it by another

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name for example I take 4g

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multiply it by 3 that makes twelve tank 12

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is a multiple of 4 moreover to

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find all the multiples of 4 we

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count 2 4 in 4 4 8 12 16 20 24 28 32 36

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40 44 et cetera but it never stops

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well yes indeed a

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number with an infinity of multiples

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another example with 3 3 6 9 12 15 18

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21 et cetera are all multiples of

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3

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let's look at some multiples of 5 for

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example 5 10 15 20 25 30 35 40 45 50 55

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60 and I stop there

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is 43 a multiple of 5 th

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time I'm looking for it it's not there so

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I would say no well yes 43 is not

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a multiple of 5 years multiplying 5 by

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a whole number you cannot come up

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with 43

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okay I understood well I will

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look if 6532 is a multiple of 5 5

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10 15

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35 ha but wait wait it's going to be

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too long well I have no choice and well

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if there is a trick to

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easily find if a number is a multiple

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of 5 May before let's start with two

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all multiples of two end with

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0 2 4 6 8 s and even numbers

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exactly so

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558 is an even number and it is a

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multiple of 2

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a number is a multiple of 3 when the

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sum of these numbers is a multiple of

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3 for example 636 I add the

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numbers 6 + 3 + 6 made 15 and as 15

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is a multiple of 3 well 636 also

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a number is a multiple of 5 if it

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ends in 0 or 5 for example 35 1625

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ends in five so it is a

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multiple of 5

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a number is a multiple of 9 if the

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sum of these digits is a multiple of

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9 and like 3 yes it works the

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same way for example

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7450 of 7 + 4 + 5 + 2 equals 18 and like

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18 is a multiple of 9 then 7450

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also

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a number is a multiple of 10 cl

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ends with zero and we stop there we

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will talk 2.4 and 2.8 later

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we can have numbers which are

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multiples of several numbers for

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example 720 is a multiple of 2 3 5 9

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and 10

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you behind your screen can you tell me

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if

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9634 is a multiple of 2 is pause if

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you need to think

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well yes because it ends with four

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and multiples of two ends with

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0 2 4 6 and 8

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and is 854 a multiple of 3

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well no since 8 + 5 + 4 that makes 17

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and 17 is not a multiple of 3

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I come back to your viper fox chicken problem

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if you have to divide the 23

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children in three teams we

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now know that 23 is not a multiple

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of 3 if it is not a multiple of 3 it

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cannot be divided by 3 either

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we then say that 23 is not divisible

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by three

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when a number is not divisible by

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another there is a remainder is in your

00:04:53

case these are the two children here

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when one number is divisible by

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another there is no remainder if you

00:05:02

were 21 in the class 21 is a

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multiple of 3 so 21 is divisible by

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three and there is no remainder

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look at the criteria to know if a

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number is divisible by another but

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post 6 you need

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never reached it's the same as

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multiples well yes for example 5

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x 4 that makes twenty of which 20 is a

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multiple of 5 and 4 may 5 and 4 are

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also divisors of 20

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now a little training find

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me in each column the numbers which

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are divisible by the number of

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requests is here the number of visits

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by two here by three here by five and

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these grounds the break here we go

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and here are the answers take a good look at the

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numbers that I have circled and try to

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understand why if you have errors

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don't don't forget that mistakes allow you

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to learn when you look for where they

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come from

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you now know how to find the

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multiple of a number and how to know

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if a number is divisible by another

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of course it will take a little time to

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remember everything that in the meantime I

00:06:17

prepare a mental map and an

00:06:19

exercise sheet that you will of course find

00:06:21

on the site m lucas dot fr under this

00:06:23

video see more

Description:

Les élèves de CM1 et CM2 peuvent voir ou revoir les notions de multiples et de diviseurs. Il s'agit tout d'abord de reconnaître et de trouver des multiples. Le multiple d'un nombre est le produit de ce nombre avec un nombre entier. Par exemple : 6x8=48 donc 48 est un multiple de 6 et de 8. Si 48 est un multiple de 6 et de 8 alors 6 et 8 sont des diviseurs de 48. Cela signifie que le résultat de la division est un nombre entier, il n'y a pas de reste. J'aborde les critères de divisibilité des nombres 2, 3, 5, 9 et 10. Les autres nombres seront étudiés plus tard. - Un nombre est divisible par deux s'il est pair, qu'il se termine par 0, 2, 4, 6 et 8. - Un nombre est divisible par 3 si la somme de ses chiffres est un multiple de 3. - Un nombre est divisible par 5 s'il se termine par 0 ou 5. - Un nombre est divisible par 9 si la somme de ses chiffres est un multiple de 9. - Un nombre est divisible par 10 s'il se termine par 0. Bien entendu, un nombre peut-être divisible par plusieurs nombres. Découvrez la carte mentale de cette leçon afin de la mémoriser plus rapidement : https://maitrelucas.fr/carte-mentale/multiples-diviseurs/ Fiche d'exercices : https://maitrelucas.fr/fiche/exercices-multiples-diviseurs-cm1-cm2/ Retrouvez toutes les vidéos de Maître Lucas en visitant son site : https://maitrelucas.fr/bibliotheque-video/ Ainsi que cette leçon : https://maitrelucas.fr/lecons/multiples-et-diviseurs-cm1-cm2/ Compétences : - Connaître les critères de divisibilité par 2, 3, 5, 9 et 10. - Comprendre la divisibilité. Les chapitres dans cette vidéo : 00:00 Introduction sur les multiples et diviseurs 00:39 Identifier un multiple 02:12 Identifier facilement les multiples de 2, 3, 5, 9 et 10 03:53 Exercices sur les multiples 04:29 Identifier un divisible 05:36 Exercices sur les diviseurs 06:06 Fiche d’exercices et carte mentale sur les multiples et diviseurs À qui s'adresse cette vidéo : Niveau : CM1, CM2 Matière : Maths CM1, Maths CM2, Mathématiques CM1, Mathématiques CM2, Nombres et calculs CM1, Nombres et calculs CM2 Cours : Mathématiques, Maths, Opérations Maître Lucas est enseignant depuis de nombreuses années. Il a enseigné à tous les niveaux de l'école maternelle et élémentaire en Europe et aux États-Unis. Il a d'ailleurs obtenu un prix d'enseignement à New York. Aujourd'hui, il s'occupe de la formation des enseignants, mais est toujours disponible pour proposer de nouvelles vidéos à ses abonnés :-).

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