Which expression is equivalent to 27 + 15

Question

Which expression is equivalent to 27+ 15

 

Answer 1

3 (9 + 5)

Answer 2

Let break this up this expression so that we are add smaller numbers rather than larger numbers. 15 is a multiple of 5.

 

27 + 15 = 27 + 5 + 5 + 5

 

 

Add 5 to 27.            27 + 5 = 32

 

Add 5 to the result.         32 + 5 = 37

 

Add 5 to the result.          37 + 5 = 42

 

 

The final result is 42.