This document contains a math worksheet with 5 problems on calculating proportions. The first problem asks to calculate two thirds of 60, which is 40. The second asks to calculate 5% of 80, which is 4. The third asks to identify the percentage that 10 is of 25, which is 40%. The fourth asks to calculate 3/5 as a fraction of 18, which is 30. The fifth asks to calculate 3/15 as a fraction of 35, which is 7.

1. Calcul mental
N°29
“Des proportions ”

2. Calculer lesCalculer les
deux tiersdeux tiers
de 60.de 60.
Diapositive 1Diapositive 1

4. CalculerCalculer
5% de 80.5% de 80.
Diapositive 2Diapositive 2

6. Compléter :Compléter :
Diapositive 3Diapositive 3
=
10
...%
25

8. Compléter :Compléter :
Diapositive 4Diapositive 4
=
3 18
5 ...

10. Compléter :Compléter :
Diapositive 5Diapositive 5
=
3 ...
15 35

12. FIN

13. CORRECTION

14. Diapositive 1Diapositive 1
× = × =
2
60 2 20
3
40

15. Diapositive 2Diapositive 2
× = ×
= =
5
5% 80 80
100
400
100
4

16. Diapositive 3Diapositive 3
×
=
×
= =
10 10 4
25 25 4
40
%
10
40
0

17. Diapositive 4Diapositive 4
=
3 18
5 30

18. Diapositive 5Diapositive 5
=
3
15
7
35