giup minh hoc bang chia 9 nhe.
K
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16 tháng 11 2018
1. The students must go to school for duty at 7 a.m every morning (Mọi học sinh phải đến trường trước 7 giờ mỗi buổi sáng)
2. All the students have to be good, careful and to be kind to each other so that the class has the best judging mark from the principal (Mọi học sinh nên tốt bụng với người khác để lớp học đạt điểm cao từ hiệu trưởng)
3. In every lesson, the students have to listen to the teacher and they are not allowed to talk in class (Ở mỗi tiết học, mọi học sinh phải lắng nghe giáo viên giảng bài và không nói chuyện riêng trong lớp)
4. We have to wear uniform on Monday, Wednesday, and Friday (Mọi học sinh phải mặc đồng phục của nhà trường vào thứ Hai, thứ Tư và thứ Sáu)
S
25 tháng 11 2016
Gọi số tổ có thể chia được nhiều nhất là x ( x E N* ; tổ )
Theo đề bài ta có :
20 chia hết cho x
16 chia hết cho x
Mà x nhiều nhất
Suy ra x = ƯCLN(20;16)
20 = 22 . 5
16 = 24
ƯCLN(20;16) = 22 = 4
Mà x = ƯCLN(20;16)
Vậy số tổ có thể chia được nhiều nhất là 4 tổ
Khi đó số nam mỗi tổ là : 20 : 4 = 5 ( bạn )
Khi đó số nữ mổi tổ là : 16 : 4 = 4 ( bạn )
Đáp số : số tổ có thể chia được nhiều nhất là 4 tổ
Khi đó số nam mỗi tổ là : 5
Khi đó số nữ mổi tổ là : 4
k nha bạn
25 tháng 11 2016
Có thể chia làm 4 tổ (tính UCLN CỦA 20,16=4)
\(\Rightarrow\)Mỗi tổ cần 5 bạn nam và 4 bạn nữ
DD
Đoàn Đức Hà
Giáo viên
2 tháng 8 2021
Sau khi bán thì còn lại số trứng là:
\(1500-240=1260\)(quả)
Số trứng còn lại nếu số trứng gà là \(5\)phần thì số trứng vịt là \(9\)phần.
Tổng số phần bằng nhau là:
\(5+9=14\)(phần)
Ngày hôm đó trại thu được số quả trứng vịt là:
\(1260\div14\times9=810\)(quả)
Ngày hôm đó trại thu được số quả trứng gà là:
\(1500-810=690\)(quả)
PM
viet doan van ngan ve de tai hoc tap co su dung ac kieu cau chia theo muc dich noi
giai giup minh nhe
1
NN
Nguyễn Ngọc Anh Minh
CTVHS
VIP
7 tháng 12 2016
Tổng đúng là 2031,81 nên số thập phân có 2 chữ số ở phần thập phân
Khi bỏ quên dấu phảy, bạn đó đã tăng số thập phân lên 100 lần nên tổng đã tăng lên là
3993-2031,81=1961,19
Trong 1 phép cộng nếu 1 số hạng tăng lên n lần thì tổng tăng thêm n-1 lần số hạng đã tăng
Như thế tổng đã tăng lên
100-1=99 lần số thập phân
Số thập phân là
1961,19:99=19,81
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Học thuộc bảng nhân 9 là thuộc luôn bảng chia 9
Chúc may mắn!!!