Question

What is (3x10) + (6x1) + (9x1/10) + (4x1/100) in standard form

Answer 1

30+6+0.9+0.04= 36.94

Answer 2

Standard Form just means in numbers e.g. 501.60

Writing this in huge spacing makes it easier for us:
3 * 10  +     6 * 1    +     (9 * 1)/10    +     (4 * 1) /100
   30    +         6      +        0.9          +       0.04  
= 36.94