Describe 58 as a sun of tens and ones

First break it up so that will be 50 and 8.
Next ask yourself how many tens can go into 50. The answer is five so put 5 tens.
Then ask yourself how many ones can go into 8, the answer is 8. So put 8 ones and it will look like this;
10+10+10+10+10+1+1+1+1+1+1+1+1

Yes. there is a constant ratio of number of calories to gram of protein.12/3=24/4=32/8=44/11=4