[Grammar] How much do you suppose....

[Yura Reiri]

How much do you suppose is this box of crayons?

What do you suppose is the cost of this box of crayons?

How much do you suppose this box of crayons costs?

Are all the questions above grammatically correct?

Thank you!

 

[billmcd]

How much do you suppose is this box of crayons?

What do you suppose is the cost of this box of crayons?

How much do you suppose this box of crayons costs?

Are all the questions above grammatically correct?

Thank you!

Yes.

 

[Rover_KE]

I agree with Bill, but for the first one I prefer 'How much do you suppose this box of crayons is?'

Rover