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12 tháng 9 2017

Có thể ghi đề hoặc chụp lại đề cũng dc mà

66.

a) 2436 : x = 12

x = 2336 : 12

x = 203

b)6.x - 5 = 613

6.x = 613 + 5

6.x = 618

x = 618 : 6

x = 103

c) 12.(x-1) =0

x - 1 = 0 : 12

x - 1 =0

x = 1 + 0

x = 1

d)0 : x = 0

x = 0 : 0

x = 1;0

63.

a) Trong phép chia một số tự nhiên cho 6,số dư có thể bằng : 0,1,2,3,4,5

b) Dạng tổng quát của số chia hết cho 4 là : 4k

___________________chia 4 dư 1 là : 4k + 1

10 tháng 4 2017

điểm thấp nhất là 72

mk trả lời nhanh nhất hscho mk nhé

12 tháng 11 2023

72

6 tháng 7 2017

là 177,8 nha bạn

6 tháng 7 2017

    \(\left(57+58+59+60+61+62+63+64+65+66+67+68+69+70\right):5\)

\(=\left[\left(70+57\right).14:2\right]:5\)

\(=\left[127.14:2\right]:5\)

\(=1778:2:5\)

\(=889:5\)

\(=\frac{889}{5}\)

4 tháng 11 2018

a ) bằng 0.

b ) bằng 65.

4 tháng 11 2018

a. (45-63+18) x (1+2+3+4+5+6+7+8+9)

= 0 x (1+2+3+4+5+6+7+8+9) = 0

b. 60-61+62-63+64-65+66-67+68-69+70

= 60 + (-61-69)+(62+68)+(-63-67)+(64+66)-65+70

= 60 + (-130)+130+(-130)+130-65-70

= 60 + (-130+130) + (-130+130)-65+70

= 60 - 65 + 70 = 65

66.She ________(like) cooking. She ____________(cook) now.67.She ______________(learn) piano for three months.68.I ______________(receive) a letter from my old friend last week.69.She _________(wash) cloth twice a week.70.We ____________(do) exercise 2A on page 20 right now.71.Look! It ______________(rain) heavily.72.After they (go)____________,I (sit) _________ down and (rest)________.73.They _______________(watch) TV at 4:00 p.m yesterday.74.He _________(open) the door, __________(enter) the...
Đọc tiếp

66.She ________(like) cooking. She ____________(cook) now.

67.She ______________(learn) piano for three months.

68.I ______________(receive) a letter from my old friend last week.

69.She _________(wash) cloth twice a week.

70.We ____________(do) exercise 2A on page 20 right now.

71.Look! It ______________(rain) heavily.

72.After they (go)____________,I (sit) _________ down and (rest)________.

73.They _______________(watch) TV at 4:00 p.m yesterday.

74.He _________(open) the door, __________(enter) the room, and _________(break) something.

75.After I (wash)______________my clothes, I (sleep) ___________

76.The earthquake ______________(happen) while we ______________(sleep)

77.He _________(write) the textbook, when we ____________(have) a headache.

78.They ____________(live) in the countryside for 15 years.

79.I _____________(play) guitar since I was a boy.

80.If I (not work) _______________ at night, I would have attended the evening classes.

81.I ___________(be) there tomorrow morning.

82.We ___________(return) from New York by train.

83.He ___________(listen) to romantic music at the moment.

84.If you visit me tomorrow, I ___________(give) ou a small present.

85.No sooner (have)_________I (watch)____________TV than the phone rang.

86.They ___________(look) at the pictures when I ____________(break) the glass.

87.We ____________(study) when she ___________(call) her children.

88.He told me he (not/eat)_____________________ such kind of food before.

89.In all the world, there (be) ___ only 14 mountains that (reach) ______above 8,000 meters.

90.He sometimes (come) __________ to see his parents.

91.When I (come) __________, she (leave) __________for Dalat ten minutes ago.

92. My grandfather never (fly) ___ in an airplane, and he has no intention of ever doing so.

93.We just (decide) __________ that we would undertake the job.

94.He told me that he (take) ____________ a trip to California the following week.

95.I knew that this road (be) __________ too narrow.

96.Right now I (attend) ________ class. Yesterday at this time I (attend) _______class.

97.Tomorrow I (leave) _____________________ for home.

98.Margaret was born in 1950. By last year, she (live) _________on this earth for 55 years .

99.The traffic was very heavy. By the time I (get) _____________to Mary’s party, everyone already (arrive) __________________

100.I (graduate) __________________  next month.

101.I (visit) __________ my uncle’s home regularly when I (be) __________ a child.

102.That book (be) _____ on the table for weeks. _____ you (not read) ______ it yet ?

103.David just (repair) __________ the TV set.

104. _________ you (be) __________here before? Yes, I (spend) __________ my holidays here last year.

105.We never (meet) __________ him. We don’t know what he (look) __________ like.

106.I think he (come) ____________ tomorrow.

107.On arriving at home I (find) _______that she just (leave) ______a few minutes before.

108.When we arrive in London tonight, it probably (rain) __________.

109. It (rain) ___________ hard now. We can’t do anything until it (stop) ________

110. Last night we (watch) __________TV when the power (fail) __________.

111. That evening we (stay) ___up to talk about the town where he (live) ___for some years.

112. I (sit) __________down for a rest while the shoes (repair) ______________.

113. Half way to the office Paul turned round and (go) __________back home because he (forget) __________to turn the gas off.

114. London (change) __________a lot since we first came to live here.

115. While we (talk) _____________on the phone the children (start) __________fighting and (break) __________a window

116. He used to talk to us for hours about all the interesting things he (do) ____ in his life.

117. You know she (stand) ____________looking at that picture for twenty minutes.

118. I (spend) __________ a lot of time travelling since I (get) __________this new job.

119. When we were at school we all (study) __________Latin.

120. When I (meet) __________ him , he (graduate) _____________________.

121. After he (finish) __________ breakfast he (sit) ________down to write some letters.

122. She (have) __________a hard life, but she’s always smiling.

123. I think Jim (be) __________ out of town. 

GIÚP MÌNH VỚI, YÊU CÁC CẬU

1
9 tháng 12 2021

mún giúp lắm nhưng giúp hok nổi lun á, seo mà dài quớ zị:((

22 tháng 1 2022

umg, không biết là giờ bạn còn đây ko nhma khum giúp được thì tớ cũm cảm ơnnn

15 tháng 10 2016

2*3+3*4+4*5+.....+66*67+68*69=(68*69*70-1*2*3):3

                                              = 109478

31 tháng 1 2023

ta có: 2005 + 53-54-55+56-57-58-59+60+61-62-63+64+65-66-67+68+69

      = 2005+(53-54-55+56)+(57-58-59+60)+(61-62-63+64)+(65-66-67+68)+69

      = 2005+0+0+0+0+69

      = 2005+69

      = 2074

31 tháng 1 2023

h

 

Ý bạn là mỗi phép tính phải thêm dấu và ....để kết quả bằng 6 phải không ạ

ví dụ:(1+1+1)!=6