A 11 year old should weigh 100-175lbs depending on how tall u r. if you are tall maybe you weigh a little more than that. if you are short maybe a little bit less. I am 4'8" and weigh 161.6 and my doctor says i am a perfect weight.
132
I42lbs
70 to 90 pounds
About 40.5 pounds to 50.5 pounds if that skinny
50pounds
109 lbs
75 lb
95kg of pounds
Well im nearly 13 and i weigh 100-102 pounds
i think it would probably weigh 50-70 pounds
an one year should weigh about to 25 pounds to 30
they should weigh about 42 pounds.