A/ = [(-5).(-2)].(8.3) 0.5Đ = 10 .24 = 240 0.5ĐB/= 212 - 530 –...

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

Câu 1. a/ = [(-5).(-2)].(8.3) 0.5đ

= 10 .24 = 240 0.5đ

b/= 212 - 530 – 212 0.25đ

= (212 - 212) - 530 0.25đ

= 0 - 530 0.25đ

= -530 0.25đ