`(3/4 +1/2): 3/4`
`=(3/4 +2/4) xx 4/3`
`= 5/4 xx 4/3`
`=20/12`
`= 5/3`
`-----`
`(3/4 +1/2) : 3/4`
`= 3/4 : 3/4 + 1/2 : 3/4`
`= 1 + 1/2 xx 4/3`
`=1+ 2/3`
`= 3/3+2/3`
`=5/3`
giai bang hai cach; (5/6-1/2):2/3 va bai (3/4+1/2):3/5
Lop 5a quyen gop duoc 470000 dong ung ho ban ngheo.To I quyen gop duoc bang 1/3 so tien cua hai to kia.To II quyen gop duoc so tien bang 1/4 so tien cua hai to kia.Hoi moi to gop duoc bao nhieu tien?
Ghi ca cach giai nha
tinh bang cach thuan tien nhat; 25*1357*4; giai ho yui nha
giai bang hai cach [1/3+1/5]x1/4
Trong mot phep chia het:
a)so chia la 6 va thuong gap 3 lan so chia.Tim so bi chia.(yeu cau lam bai giai)
b)so chia bang 1/4 so bi chia.Tim thuong.(yeu cau lam bai giai)
c)thuong bang 1/3 so bi chia.Tim so chia.(yeu cau lam bai giai)
1+2-3+4-5+6-7+8-9+10...19+20 tinh nhanh bang bao nhieu giai thich cach lam
giai bang hai cach
( 1/3 + 1/5 ) x 1/2
giai bai toan sau:Co 38 chiec but gom hai loai :mau xanh va mau do.Biey rang 2/3 so but xanh bang 3/5 so but do.Tim so but moi loai?
giai chi tiet bai toan.
Cho hinh binh hanh abcd co chu vi bang 90cm, canh day ab bang 5/4 canh ad va co chieu cao bang 19cm.Tinh dien tich hinh binh hanh abcd ? [Co ve so do nhung khong ve hinh binh hanh ]
Giai giup minh,minh se ket ban giai bai toan cho to|
Giai ho to nhe|
