2,55 × 10 + ( 3+1) =
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Bài 1: Chuyển các phân số và hỗn số thành số thập phân
11/1000 = 0,011
73/100 = 0,73
9/10 = 0,9
1 91/100 = 1,91
7 7/4 = 7 + 7/4 = 7 + 1,75 = 8,75
9 23/1000 = 9,023
Bài 2: Tính bằng cách thuận tiện
653 × 56 + 653 × 44
= 653 × (56 + 44)
= 653 × 100
= 65300
55/17 × 26/110 − 55/17 × 9/110
= 55/17 × (26/110 − 9/110)
= 55/17 × 17/110
= 55/110
= 1/2
Bài 3:
Đổi 950 kg = 0,95 tấn
Xe thứ nhất chở:
13/2 = 6,5 (tấn)
Xe thứ hai chở:
6,5 − 0,95 = 5,55 (tấn)
Cả hai xe chở:
6,5 + 5,55 = 12,05 (tấn)
Đáp số: 12,05 tấn cà phê
b1
11/1000=0,011
73/100=0,73
9/10=0,9
1 91/100 = 191/100=1,91
7 7/4= 35/4= 8,75
9 23/1000= 9023/1000= 9,023
b2
653x56+653x44= 653 x ( 56+44) = 653 x100 = 65300
Ex 1:
X
V
X
V
V
X
Ex 2:
Her foreign friend’s name is Lily.
She is 11 years old.
She is from Canada.
She is tall and slim. She has long brown hair and blue eyes.
Her favourite subject is Art because she loves drawing and painting.
She likes reading books and playing the piano.
They often play badminton and visit famous places in the city.
Ex 3:
Canada Toronto – brother
English
favourite
piano
weekend
together
My sister has got some new shoes.
→ These are my sister’s new shoes.
- False : X(Lily is from Canada, not the USA).
- True: V (She lives in Toronto).
- False: X (She has long brown hair, not short hair).
- True:V (Her favourite subject is Art).
- True: V (They play badminton at the weekend).
- False: X (Lily thinks the food in my country is delicious, not not delicious).
1. Lily is from USA. | X | |
2. She lives in Toronto. | V | |
3. She has short brown hair. | X | |
4. She likes Art best. | V | |
5. They play badminton at the weekend. | V | |
6. Lily thinks the food in my country is not delicious. | X |
dịch từ gg dịch:
"Đôi khi, người mà bạn nhớ nhung lại chính là người mà bạn buộc phải buông tay. Tôi mỉm cười như thể chẳng có chuyện gì xảy ra, nhưng trái tim tôi vẫn khắc ghi tất cả. Có lẽ chúng ta sinh ra là để gặp nhau, chứ không phải để ở bên nhau mãi mãi."
1. You watch television in the evening.
$\rightarrow$ Do you watch TV in the evening?
2. They eat dinner at 7 o'clock.
$\rightarrow$ What time do they have dinner? (hoặc: Do they eat dinner at 7 o'clock?)
3. He listens to music in his room.
$\rightarrow$ Does he listen to music in his room?
4. You wear jeans at school.
$\rightarrow$ Do you wear jeans at school?
5. Isabel plays basketball on Fridays.
$\rightarrow$ Does Isabel play basketball on Fridays?
6. You understand your homework.
$\rightarrow$ Do you understand your homework?
7. The boys like chicken.
$\rightarrow$ Do the boys like chicken?
8. Milly's dad flies a plane.
$\rightarrow$ Does Milly's dad fly a plane?
9. They live in a big house.
$\rightarrow$ Do they live in a big house?
10. We finish school in July.
$\rightarrow$ Do you / we finish school in July?
11. He often studies hard for his exams.
$\rightarrow$ Does he often study hard for his exams?
12. The girls usually go to the park on Sundays.
$\rightarrow$ Do the girls usually go to the park on Sundays?
ok, rp
Đã có 1 CTV nói là ko đc đăng câu hỏi về giải đố trên này r nha (ko nhớ cua rai nx, chỉ nhờ là CTV)

2,55 x 10 + (3 + 1)
= 25,5 + 4
= 29,5
\(3 + 1 = 4\)
\(2,55 \times 10 = 25,5\)
\(25,5 + 4 = 29,5\)