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DT
Đỗ Thanh Hải
CTVVIP
30 tháng 10 2021
8 left - had bought - needed
9 had burnt - arrived
10 had done - was
11 had - heard - told
12 had lived - came
13 didn't talk - arrived - had already left
14 went - had stopped
15 thought - had won - didn't have
S
1
DT
Đỗ Thanh Hải
CTVVIP
14 tháng 10 2021
1 because
2 although
3 While
4 Although
5 When
6 Although
7 if
8 while
9 although
10 because
NK
6
29 tháng 10 2018
Bài 139.
a) Ta có 56 = 23 . 7; 140 = 22 . 5 . 7. Do đó ƯCLN(56,140) = 22 . 7 = 28;
b) Ta có 24 = 23 . 3; 84 = 22 . 3 . 7; 180 = 22 . 32 . 5.
Vậy ƯCLN(24,84,180) = 22 . 3 = 12.
c) Vì 180⋮60 nên ƯCLN(60,180) = 60;
d) ƯCLN(15,19) = 1.
Bài 140.
a) Vì 80⋮16 và 176⋮16 nên ƯCLN(16, 80, 176) = 16;
b) Ta có 18 = 2 . 32 ; 30 = 2 . 3 . 5; 77 = 7 . 11.
Do đó 18 , 30, 77 không có ước chung nào khác 1.
Vậy ƯCLN(18,30,77) = 1.
1 had finished - went
2 hadn't eaten - came
3 told - had never met
4 had done - went
5 went - got
6 had - begun - left
7 had been - started
Oki