Réponse:
Exercise A
2) 02.77% =) two point seventy - seven percent
3) 4/5 =) four over five
4) 9x9= 81 =) nine tines nine equal to eighty one
5)13 -7=6 =) thirteen minus seven equal to six
6) 10:2=5 =) ten divided by two equal to five
7) the twenty - third =} 23rd
8) six halves =} 6 and 1/2
9) 20th =) the twentieth
10) 12. 35 =) half past twelve
11) 2.05 =) five past two
12) 9,786,534,120 =) nine billion, seven hundred and eighty six million, five hundred and thirty four thousand, hundred and twenty