Doubles - Second Problem

The first question we are solving is forty seven plus fifty three. Forty seven plus three equals fifty. So then we have to subtract fifty three and three to make fifty. So I then I have fifty plus fifty to make one hundred. 

Onto the second question. Forty five plus fifty five. So forty five plus five equals fifty.  Then we have to subtract fifty five and five to make fifty. So then we add fifty and fifty to make the answer one hundred.