Answer:
If we add two numbers or more than two numbers then make ten strategy is a basic strategy to learn addition .
In this strategy we break the smaller number in terms to make the larger number equals to ten or tens .
For example :-
[tex]8+7=8+(2+5)=8+2+5=10+5=15[/tex]
Now, the given addition problem is [tex]9+27[/tex]
Here we break 9 to make 27 equals to 30 or 3 tens.
We can write, [tex]9=6+3[/tex]
Such that [tex]9+27=(6+3)+27=6+3+27=6+(3+27)=6+30=36[/tex]
hence, [tex]9+27=36[/tex]
