Ikan test term 3 week 3.

Hi today I did a ikan test  I got  15 write  and  got  3  wrong One of the questions that I got write was  How many tens are in  43 800 my answer was 438.One of the ones that I got wrong was  write this fractions  in order of size  smallest to biggest  I wrote 1/5,1/6,1/2 the answer was  !/6,1/5,1/2.Her is a link to the I kan test that I did.I kan test.  Her is a photo of the questions that I got wrong and write