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DT
6
26 tháng 1 2016
Đổi: 2,25=9/4
Số lớn là:
2,25 : (9-4)*9=4,05
Số bé là:
4,05-2,25=1,8
26 tháng 1 2016
thương:2,25=225/100=9/4
hiệu:2,25
hiệu số phần bằng nhau là:
9-4=5(phần)
số bé là:
2,25:5x4=1,8
đáp số:SB:1,8
NQ
1
22 tháng 1 2016
Vì thương của chúng bằng hiệu của chúng và bằng 2,25
Nên tỉ số của chúng là 9/4 và hiệu bằng 2,25 (Đến đây giải bài toán "Tổng -Tỉ"
Hiệu số phần bằng nhau là: 9 - 4 = 5 phần.
Số bé là: 2,25 : 5 x 4 = 1,8
Đáp số: 1,8
KH
0
22 tháng 7 2016
Đổi : 2,25 = \(\frac{9}{4}\)
Ta có sơ đồ :
Số bé : l-----l-----l-----l-----l 2,25
Số lớn :l-----l-----l-----l-----l-----l-----l-----l-----l------l
Theo sơ đồ , hiệu số phần bằng nhau là :
9 - 4 = 5 ( phần )
Số bé là :
2,25 : 5 x 4 = 1,8
Đáp số : 1,8
PH
1
28 tháng 2 2016
2,25 = 9/4
Hiệu số phần băng nhau là: 9 - 4 = 5 (Phần)
Số bé là: 2,25 : 5 x 9 = 4,05
ND
2
25 tháng 2 2016
ti so la 2,25/1
hieu so phan bang nhau la 1,25
vay so be la
2,25:1,25x1=1,8
ND
2
KS
2
S
19 tháng 7 2016
2,25 = $\frac{9}{4}$94
Hiệu số phần bằng nhau là:
9 - 4 = 5 phần
Số bé là:
2,25 : 5 x 4 = 1,8
Đáp số : 1,8
18 tháng 7 2016
2,25 = \(\frac{9}{4}\)
Hiệu số phần bằng nhau là:
9 - 4 = 5 phần
Số bé là:
2,25 : 5 x 4 = 1,8
Đáp số : 1,8
VP
6
3 tháng 1 2017
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Thương tức là tỉ số : 2,25 = 9/4
Số bé là : 2,25 : ( 9 - 4 ) x 4 = 1,8
Đáp số : 1,8
Hai số thập phân có thương và hiệu đều bằng 2,25. Tìm số bé?