Одна вторая умножаем на самому себе трижды

1/8 вроде

Dear sean! thank you a lot for your last letter. it was a real suprise! sorry, i haven't written for so long but i was busy with my school. i usually spend my holidays in my house with relatives and friends. or i can go to my friend's house. in summer i like play volleyball and in winter i like ski (sometimes in winter i with my parents spend to the ski resort). and i think in summer i will spend at the camp. and do you like summer camps? have you ever ski? write back soon! best wishes, ivan (тут напиши свое имя вместо ivan)

1)-   15 т 39 кг=15039 кг             (1 тонна=1000кг)                                                             2)-   9805ц=9 тонн8 ц 5кг           (1ц=100кг)                                                                     3)-   654ц=65400 кг                                                                                                       5)-   82т 500кг=825 ц