Tick hết lun Làm cho em bài
66
67
68
69
70
10 học sinh nhận được diểm kiểm tra của mình . Bài kiểm tra có điểm tối đa là 10 .Từng bạn cộng điểm của 9 bạn còn lại với nhau . Biết 10 tổng nhận được là 66 ; 66 ; 67 ; 67 ; 68 ; 68 ; 69 ; 69 ; 70 ; 71 ; 72 . Tìm điểm thấp nhất?
điểm thấp nhất là 72
mk trả lời nhanh nhất hscho mk nhé
(57+58+59+60+61+62+63+64+65+66+67+68+69+70):5=bn
ai nhanh mk tick cho nhớ kb với mk nha
\(\left(57+58+59+60+61+62+63+64+65+66+67+68+69+70\right):5\)
\(=\left[\left(70+57\right).14:2\right]:5\)
\(=\left[127.14:2\right]:5\)
\(=1778:2:5\)
\(=889:5\)
\(=\frac{889}{5}\)
Tính nhanh
a) (45-63+18) x (1+2+3+4+5+6+7+8+9)
b) 60-61+62-63+64-65+66-67+68-69+70
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 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
mún giúp lắm nhưng giúp hok nổi lun á, seo mà dài quớ zị:((
B = 2.3 + 3.4 + 4.5 + ...... + 66 .67 + 68 .69
2*3+3*4+4*5+.....+66*67+68*69=(68*69*70-1*2*3):3
= 109478
2005+53-54-55+56+57-58+59+. . .+65-66-67+68+69
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
-11+12+(-13)+14+(-15)+...+(-67)+68+(-69)+70
1 1 1=6
2 2 2=6
3 3 3=6
4 4 4=6
5 5 5=6
6 6 6=6
7 7 7=6
8 8 8=6
9 9 9=6
10 10 10=6
(Làm gì đó để phép tính bằng 6)
Ý bạn là mỗi phép tính phải thêm dấu và ....để kết quả bằng 6 phải không ạ
(1+1+1)×2=6
2+2+2=6
3×30+3=6
(4+4+4)÷2=6
(50+50+50)×2=6
6×60×60=6
7-70×70=6
8-(80+80)=6
(90+90+90)×2=6
(100+100+100)×2=6
67, 68, 69, 70 SBT/147
nhanh và luôn nhé