Which of the following statements are true and which are false:
(8+52)+22=8+(22+52)
Addition is associative: This property says that changing the grouping of the addends does not change the sum.
i.e. a+(b+c)=(a+b)+c
(8+52)+22=828+(22+52)=82(8+52)+22=8+(22+52)
Hence, the statement is true.
Say whether the following are true or false:
True
False
(1) (−3)3 = +27
(2) (+2)4 = −16
(3) (−5)2 = +25
(4) (+7)3 = −147
(5)