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nguyenhuyhoanggia
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Lê Quang Phúc
20 tháng 9 2017 lúc 5:52

a) 41. 36+ 59. 90 + 41. 84 + 59. 30

= 41 . (36 + 84) + 59 . (90 + 30)

= 41 . 120 + 59 . 120

= 120 . ( 41 + 59 )

= 120 . 100

= 12000

b) 4. 51 . 7 + 2 . 86 .7 + 6 . 4 . 7

= 28 . 51 + 2 . 43 . 2 . 7 + 6 . 4 . 7

= 28 . 51 + 28 . 43 + 28 . 6

= 28 . ( 51 + 43 + 6 )

= 28 . 100

= 2800

c) ( 4.7 ) . 5 + ( 4.7 ) . 43 + ( 4.7) - 6

= 28 . 5 + 28 .43 + 28 - 6

= 28 . (5 + 43 + 1) - 6

= 28 . 49 - 6

= 1372 - 6

= 1366.

d) 53 . 39 + 47 . 39 - 53 . 21 - 47 . 21

= 53 . (39 - 21) + 47. (39 - 21)

= (39 - 21) . ( 53 + 47 )

= 18 . 100

= 1800.

Trịnh Nguyệt Băng
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Nguyễn Bảo Thuỷ Tiên
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Darlingg🥝
23 tháng 9 2019 lúc 14:17

57+59+...+333+335

=(335 - 57) : 2 + 1 = 140

= ( 335 + 57) x 140 = 54880

Le Van Huynh
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bá đức
24 tháng 4 2022 lúc 22:05

=57x58+[42x(132-75)]

=57x58+42x57

=57x(58+42)

=57x100

=5700

Le Van Huynh
24 tháng 4 2022 lúc 22:11

Cảm ơn Bá Đức nhé!

 

Phạm vũ phương mai
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BRVR UHCAKIP
29 tháng 3 2022 lúc 22:35

38 phút 59 giây - 9 phút 33 giây

=27 phút 26 giây

★彡✿ทợท彡★
29 tháng 3 2022 lúc 23:05

38 phút 59 giây - 28 phút 39 giây : 3 

= 38 phút 59 giây - 9 phút 33 giây

=27 phút 26 giây

Bé Cáo
29 tháng 3 2022 lúc 23:21

38 phút 59 giây - 28 phút 39 giây : 3 

= 38 phút 59 giây - 9 phút 33 giây

=27 phút 26 giây

Lê Tiến Dũng
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Thu Hằng
9 tháng 3 2022 lúc 21:20

19. A. animated         B. drama         C. comedy         D. science fiction

20. A. was born         B. born         C. is born         D. were born

21. A. in             B. at             C. on             D. during

22. A. for             B. with         C. in             D. because

24. A. battle       B. army        C. invade         D. general

 

Mình gửi nha !!!

Nguyễn Hoàng Duy Quang
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Phương Anh
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S - Sakura Vietnam
26 tháng 12 2021 lúc 18:50

câu hỏi đâu bn ?

arina minhanh
5 tháng 5 2022 lúc 16:39

bài đâu bn

Linh Nguyễn
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Đỗ Thanh Hải
15 tháng 4 2021 lúc 17:01

1 Japanese is too difficult for me to learn

2 If he felt well, he wouldn't go to bed early

3 I wish I hadn't gone out in the rain

4 They had me carry te box upstairs

5 Your sister is too young to enjoy this film

6 THey had this letter posted by me

7 The morning was too cold for them to go out

8 If the tickets were cheap enough, we would go there

9 The pupils collected these old clothes

10 The coffee is so excellent so I can drink it

Đỗ Thanh Hải
15 tháng 4 2021 lúc 17:04

11 Her house was sold 2 years ago

12 Some tickets was bought there by him

13 Waste paper was recycled to save money and labour

14 The TV set was so heavy that the girl couldn't move it

15 I will have someone type the report for you

16 There was so much fog that the driver couldn't see far

17 THe day was fine enoigh for them to enjoy sunbathing on the beach

18 I wish your were here now

19 Susan offeref me to lend her some money

20 They asked me is I could fill in the form

Đỗ Thanh Hải
15 tháng 4 2021 lúc 17:10

21 The acrobat whom we saw on TV last night is his uncle

22 The traffic jam prevented us from coming late

23 It is sucha wide gate that the struck can't get through it

24 Thet novel was written by Charales Dickens

25 Your answer is too difficult for me to answer

26 We've had so much homework that we can't find time to go out

27 He can't borrow the book because he don't have the library card

28 If the buses weren't full up, they would stop

29 She is not strong enough to carry her luggage

30 The dog which is playing with a ball is a big one