Các câu hỏi tương tự
a, -3/7 + 5/13 + -4/7
b, -5/21 + -2/21 + 8/24
c, (-3.2) . -15/64 + (0,8 - 2 4/5) : 2
d, 0,7 . 4/3 . 20 . 0,375 . 5/28
Dấu . là nhân nha mn
7,2 chia 2,4 nhan X= 4,5
X nhan4,8 cong 5,2nhan X= 160
9,15nhan X cong 2,85 nhan X=48
[X nhan 3 cong 4 ] chia 5 =8
[15 nhan 28 - X] chia 2/5= 200 chia 0,4
7 nhan [8 cong 2 nhan X]= 210
X nhan 5,6 cong 4,4 nhan X= 130
[ X - 12] nhan 17 chia 11 = 51
9,15 nhan cong 2,85 nhan X= 48
tim X nha m.n
a ma cai nay mk rat voi nen nhanh jup mk nha
[......] cai nay la dau nghoach nha
1. Mot hinh chu nhat co chieu dai la 48 cm, chieu rong la 30. tim ti so % cua chieu dai so voi chieu rong
2. Mot tam bia hinh chu nhat co chu vi 12 dm, chieu dai hon chieu rong 9 cm. tinh chieu dai
3. Trong 1 phep nhan tich gap 2,35 thua so thu 1 va 4,02 thua so thu 2. tim tich phap nhan do
4. Tim so tiep theo cua day so 0,7; 0,21; 0,063;...
5. Phai do them bao nhieu gam muoi vao mot binh dung 300 g dung dich 2 % muoi de nhan duoc binh dung dich co 4 % muoi
A 49 8/23 - (5 7/32 + 14 8/23B 71 36/45 - 43 8/45 - 1 17/57C -3/7 × 5/9 + 4/9 × -3/7 + 2 3/7 D ( 19 5/8 : 7/12 -13 1/4 : 7/12 ) ×4/5E 0,7×2 2/3 × 20×20×0,375 × 5/28F (9,75 × 21 3/7 + 39/4 × 18 4/7) × 15/78H ( 9 3030/808080 + 7 303030/484848 + 4,03I 10101× ( 5/111111+5/222222- 4/3×7×11×13×37 )
Đọc tiếp
A = 49 8/23 - (5 7/32 + 14 8/23
B =71 36/45 - 43 8/45 - 1 17/57
C = -3/7 × 5/9 + 4/9 × -3/7 + 2 3/7
D = ( 19 5/8 : 7/12 -13 1/4 : 7/12 ) ×4/5
E = 0,7×2 2/3 × 20×20×0,375 × 5/28
F = (9,75 × 21 3/7 + 39/4 × 18 4/7) × 15/78
H = ( 9 3030/808080 + 7 303030/484848 + 4,03
I = 10101× ( 5/111111+5/222222- 4/3×7×11×13×37 )
mot cong nhan , trong mot thang tien an chiem het \(\frac{1}{2}\)tien luong , tien nha chiem het \(\frac{1}{6}\)tien luong va tien tieu vat bang \(\frac{1}{5}\)tien luong , cuoi thang nguoi cong nhan de danh duoc 200.000 dong.hoi luong thang cua nguoi cong nhan la bao nhieu?
goi y luong thang nguoi cong nhan la : 600.000
ai lam xong va dung cho 3 tich.
so cong nhan to 1 gap 3 lan to 2neu chuyen 20 cong nhan tu to 1 sang to 2 thi to 2 nhieu hon to 1 la 4 nguoi.Hoi moi to co bao nhieu cong nhan
1 nha may co 3 to cong nhan tuan vua qua to 1 san xuat duoc so san pham bang 3/5 so san pham to 2 , to 2 san suat bang 1/2 so san pham to 3 , to 3 san xuat hon to 1 la 28 san pham . hoi moi to san suat duoc bao nhieu san pham ?
tong 2 so la 65 ST1 nhan 2 , ST2 nhan 5 thi tong la 184 tim 2 so
\(\frac{2}{3}x\frac{5}{6}x\frac{9}{10}x\frac{14}{15}x\frac{20}{21}x\frac{27}{28}\)