bonjours à tous est ce que vous pouvez m'aider avec cet exercice de maths. a. 7/10= .../100=........% b. 15/50= .../100= .......% c. ..../1000= 2,5/100=......%

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a. 7/10= .../100=........%

7/10 = (7 x 10)/(10 x 10) = 70/100 = 70%

b. 15/50= .../100= .......%

15/50 = (15 x 2)/(50 x 2) = 30/100 = 30%

c. ..../1000= 2,5/100=......%

2,5/100 = (2 x 5)/(100 x 10) = 10/1000

10/1000 = 2,5/100 = 2,5%

d. ...../20= 15/100=........%

15/100 = (15/5)/(100/5) = 3/20

3/20 = 15/100 = 15%

e. 2/.....= ....../100= 40%

40% = 40/100 = (2 x 20)/(5 x 20) = 2/5

2/5 = 40/100 = 40%

f. 13/200= ...../100= .......%

13/200 = (13/2)/(200/2) = 6,5/100 = 6,5%