PDF chapter test TRY NOW

Choose the right integer property that applies to the following conditions:
 
1) 61 =6 + 1 
 
2) −27 \(+ 0 = \) −27 
 
3) 140 + ( 1 + 6) = ( 140 + 1 ) + 6 
 
4) (-27)+(-10)=-37