Add 0.337 + 29.4 = answer for blank 1:

Hello!

To find the answer for Blank 1, you'll first need to line up your numbers according to the decimal

29.400
+
00.337


Now the hundredth and the thousandth place of 0.337 will be left untouched during the equation but the tenths place will be added with 4 to get 7. After that, all you need to do is add everything else with 0. Once that is done, you should have an answer of...

29.737

I hope this helps!

The first option would be correct if it were one half and not one

(-0, -7) is your answer