HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
87/14:31/14+68/14:31/14
11/50.(-17 1/2)-11/50.82 1/2
help em vs ạ
-3/4 . 31 11/23 - 0,75 . 8 12/23
Cho A = 1 + 3 + 32 + 33 + 34 + 35 + 36 + 37
a) Tính 2A
b) Chứng minh A = (38 - 1) : 2
11. My children/ spend/ their holiday/ a farm.
®
12. They/ probably/ build/ big house/ but/ it/ not/ sure/ all.
13. I/ promise/ I/ not/ late/ school.
14. My mother/ prepare/ food/ my birthday party/ next week.
15. you/ have/ time/ finish/ your homework