Good question Julia, it is bit difficult.:)
Well done Julia! Good estimation task! But I recommend you to speak louder next time, I couldn't here you so well in video.
Too big 294Too low 12estmate 123
Too low 25 Too high 10000 Estimate 1000
Too low 30Too Big 300Est 200
501 too big
A great explanation of how to use multiples of 10 and 100 to find the total. Well done.
too low 80too high 400Estimate 100