

Arrondir les nombres décimaux à l’unité proche
Presentation
•
Mathematics, Other
•
5th - 7th Grade
•
Practice Problem
•
Medium
Carmen Perreauxvolke
Used 8+ times
FREE Resource
5 Slides • 10 Questions
1
Arrondir les nombres décimaux à l’unité proche

2
3
On va utiliser l'arrondissement des nombres compatibles pour la leçon 3.2
C’est comme estimer l’argent.
Ex. 5,23$ est plus proche à 5$
Si je veux estimer le total de 3 livres qui coutent 5,23$ chacun :
5, 23$ x 3 =
5$ x 3 = 15$
4
Multiple Choice
Arrondir au dollar le plus proche:
3,73$
2$
3,75$
3$
4$
5
Multiple Choice
Arrondir au dollar le plus proche :
10,19$
10$
11$
10,20$
10,50$
6
Multiple Choice
Arrondir à l’unité le plus proche :
2,05
3
4
1
2
7
Multiple Choice
Arrondir à l’unité proche :
341,55
341
340
342
350
8
Multiple Choice
Arrondir à l’unité proche :
29,945
29
28
30
31
9
Estimer un produit: la multiplication
5,81 x 7 =
Arrondir 5,81 à l’unité proche : 6
6 x 7 = 42
10
Multiple Choice
Estimer le produit:
7,39 x 3
7 x 3 = 21
8 x 3 = 24
11
Multiple Choice
Estimer le produit:
25,783 x 4 =
25 x 4 = 100
26 x 4 = 104
12
Estimer le quotient ÷
15.83 ÷ 4 =
Arrondir 15,83 à l’unité proche : 16
16 ÷ 4 = 4
13
Multiple Choice
Estimer le quotient:
49,74 ÷ 5
49 ÷ 5 = 9,8
50 ÷ 5 = 10
14
Multiple Choice
Estimer le quotient:
158,02 ÷ 2 =
160 ÷ 2 = 80
159 ÷ 2 = 79,5
158 ÷ 2 = 79
15
Multiple Choice
Estimer le quotient:
Six personnes partagent le prix d'un pizza de 29,89$.
Combien d'argent est-ce que chaque personne doit payer?
29, 89$ ÷ 6 =
30$ ÷ 6 = environ 5$ par personne
29, 89$ ÷ 6 =
29$ ÷ 6 = environ 4,83$ par personne
Arrondir les nombres décimaux à l’unité proche

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