Réponse:
EXERCICE 1:
a)
[tex](7 \times 1000) + (3 \times 10) + \frac{5}{10} + \frac{8}{1000} [/tex]
=7000+30+0,5+0,008
=7 030,508
b)
[tex]4000 + (5 \times 10) + \frac{4}{100} [/tex]
=4000+50+0,04
=4050,04
c)
[tex]10000 + (7 \times 100) + \frac{7}{10} + \frac{3}{100} + \frac{9}{1000} [/tex]
=10000+700+0,7+0,03+0,009
=10700,739
d)
[tex] \frac{5}{10} + \frac{7}{100} [/tex]
=0,5+0,007
=0,57
EXERCICE 2:
Le nombre est 99,182 car:
•9+9=18
•1+2+8=11
•9-1=8
•1×2=2
