552

552

552

80 + 10 = 90     30 + 40 = 70     80 + 5 = 85

90 - 80 = 10     70 - 30 = 40     85 - 5 = 80

90 - 10 = 80     70 - 40 = 30     85 - 80 = 5

80+10=90                  30+40=70                         80+5=85

90-80=10                   70-30=40                          85-5=80

90-10=80                   70-40=30                          85-80=5

80 + 10 = 90   30 + 40 = 70  80 + 5 = 85                                                                                                

90 - 80 = 10    70 + 30 = 90   85 - 5 = 80

90 - 10 = 80    70 - 40 = 30     85 - 80  = 5

Lời giải chi tiết:

80 > 70	10 < 60	80 > 50
20 < 40	70 > 40	50 < 80
50 < 90	30 < 80	50 = 50

>;<;<;>;>;< đây

1.Everyone has their own study habits which are suitable to their routines. Personally, I have to go to school in the morning on weekdays, therefore, I spend the afternoon doing the homework. At night, after eating dinner, I often relax for a while by surfing Facebook or Youtube, and then come back to my desk. If the homework is completed, I normally practice some extra English exercises. My mother has bought several English learning books for me. On Monday and Tuesday, I have an extra course in Mathematics, so I’m a little bit busy those days. In addition, being interested in editing videos, I usually spend my free time watching videos on Youtube about this topic and practicing it myself.

2.My clothing style is pretty simple. I like comfort so I opt for a t-shirt and jeans. This is also my favorite outfit. I have quite a few t-shirts. My favorite colors are black and white because it’s pretty basic and easy to match. When I’m at home, I mostly just wear T-shirts. However, when I go to school I will dress more politely. I wear a shirt and shoes. There’s a t-shirt that I really like. It is quite wide. It is black and has no other textures. Sleeves are wide and elbow-length. This is a gift my brother bought me when I was 16 years old. I usually wear it on outings with friends, when traveling or going out for coffee. I have a lot of pictures taken with this shirt. My favorite pants are wide leg pants. I totally match it with the t-shirt. It looks great. I like my current clothing style and I don’t think I have a reason to change it yet.

3.

 Traditional costumes are not just a set of clothes to put on. When we wear traditional clothes, we are wearing national pride. I love the Ao Dai – the traditional costume of Vietnam. The Ao Dai has a simple design but is extremely beautiful. It is an outfit that can enhance all the beauty of Vietnamese women. The dress has a stiff neckline. Buttons are attached from the neck down to the waist. The two cuffs are loaded down to the ankles. Ao Dai is worn with a pair of loose silk pants. Today, Ao Dai has been improved and innovated by artisans and designers. They both retain the beauty of traditional costumes and are suitable for today’s youthful and modern style. On important occasions, my mother and I will wear Ao Dai to show our respect

Viết phép tính sao cho các chữ số cùng hàng thẳng cột với nhau.

Tính theo thứ tự từ phải sang trái.

Phương pháp giải:

Trừ các chữ số hàng chục rồi viết thêm một chữ số 0 vào sau kết quả vừa tìm được.

Lời giải chi tiết:

a) 80 - 20 - 10 = 50

    80 - 30 = 50

b) 70 - 30 - 20 = 20

    70 - 50 = 20

c) 90 - 20 - 20 = 50

    90 - 40 = 50

 a)80-20-10=50                                                                                                                                                                                                        80-30=50                                                                                                                                                                                                         b)70-30-20=20                                                                                                                                                                                                        70-50=20                                                                                                                                                                                                         c)90-20-20=50                                                                                                                                                                                                        90-40=50                                                                                                                                                                                                         đó là câu trả lời nha

câu a, =50       câu b,=20

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

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

Bài nay làm như thế này em nhé:

40-20 =20          50-40=10          60-40=20            70-30=40
70-30=40           60-60=0            80-20=60             80-10=70 90-70=20           90-30=60 em làm bài tốt nha

      

70 – 10 – 20 = 40 70 – 30 = 40	90 – 30 – 20 = 40 90 – 50 = 40
80 – 30 – 10 = 40 80 – 40 = 40

  70 x 70 : 70 + 80 : 2 

= 4900    : 70 + 80 : 2

=          70     + 40

=                 110

\(70\times70\div70+80\div2=70+40=110\)

  70 x 70 : 70 + 80 : 2

= 4900 : 70 + 40

= 70 + 40

= 110

Answer : 110

a) điểm thi đua trong mỗi tháng của lớp 7a