1.

Use the commutative and associative properties to simplify the following:431 + 37 + 69 + 63

Answer»

431 + 37 + 69 + 63 = 431 + (37 + 69) + 63 

= 431 + (69 + 37) + 63 (Commutative property) 

= (431 + 69) + (37 + 63) (Associative property) 

=(431 + 69) + 100 

= 500+ 100 

= 600



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