A/ = [(-5).(-2)].(15.3) 0.5Đ = 10 .45 = 450 0.5ĐB/= 162 - 180 -...

câu 1. - KIEM TRA 1TIEETS TOAN 6
KIEM TRA 1TIEETS TOAN 6

Câu 1. a/ = [(-5).(-2)].(15.3) 0.5đ

= 10 .45 = 450 0.5đ

b/= 162 - 180 - 162 0.25đ

= (162 - 162) - 180 0.25đ

= 0 - 180 0.25đ

= -180 0.25đ