40 + 40 =
60 + 60 =
80 + 80 =
Mn k mk nha mk là người mới.
K
Khách
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Những câu hỏi liên quan
HH
14
NM
20
18 tháng 9 2016
\(10+20+30+40+50+60+70+80+90+100\)
\(=\left(10+90\right)+\left(20+80\right)+\left(30+70\right)+\left(40+60\right)+\left(50+100\right)\)
\(=100+100+100+100+150\)
\(=550\)
AH
3
DT
24 tháng 4 2017
Normally, when I have free time, I usually play sports, watch tv, surf webs and read books. After learning stressful hours, such activities help me entertain and relax. And playing sport is the free time activity I like best. Firstly, I like to play sport because it is really a healthy activity. You know, sports provide many benefits for our health. It can improve health and help us to be strong. In the addition, sport help us increase in statue and have a excellent body. Secondly, I like sports. I feel as dynamic as possible. Moreover, It makes me full of energy. Lastly, well, It is what I enjoy most when playing sports. That is sports can help us take up the community. We will knows a lot of people because of having the same interests in playing sports. Trust me, I was acquainting a lot of friends when I play sports. In short, I like to play sport because it provides many benefits for me. And you? What are activities do you like best in your free time?
DT
24 tháng 4 2017
I do quite a lot of sport actually. I play football mostly - on Wednesday nights and Sunday afternoon with a local team. I also play tennis and squash when I can but I don't really get the time to do them as well every week. I work quite hard at the moment, so I don't get a lot of free time unfortunately.
T
5
11 tháng 10 2016
47 + 50 + 3 + 100 + 20 + 80 + 40 + 60 + 10 + 90 = 500
nha bn k mk nha bn
thanks nhju mk k cho bn roj đó
CM
30 tháng 3 2019
Lời giải chi tiết:
| 40 – 20 = 20 | 50 – 40 = 10 | 60 – 40 = 20 |
| 70 – 30 = 40 | 60 – 60 = 0 | 80 – 20 = 60 |
| 80 – 10 = 70 | 90 – 70 = 20 | 90 – 30 = 60 |
9 tháng 2 2021
40 - 20 = 20 | 50 - 40 = 10 | 60 - 40 = 20 |
| 70 - 30 = 40 | 60 - 60 = 0 | 80 - 20 = 60 |
| 80 - 10 = 70 | 90 - 70 = 20 | 90 - 30 = 60 |
CM
27 tháng 2 2019
So sánh các số tròn chục, số nào có hàng chục càng lớn thì có giá trị càng lớn rồi điền dấu thích hợp.
20 > 10 40 < 80 90 > 60
30 < 40 80 > 40 60 < 90
50 < 70 40 = 40 90 = 90
ST
16
KA
27 tháng 10 2021
Tìm số chia trong phép chia 250 chia cho 4 , dư 10 là :
A . 20
B . 60
C . 40
D . 80
40+40=80
60+60=120
80+80=160
40+40 = 80
60+60=120
80+80=160