\(\frac{7256\cdot4375-725}{3650+4375\cdot7255}\)
càn cách giải
\(\frac{7256\cdot4375-725}{3650+4375\cdot7255}\)
\(\frac{7256\cdot4375-725}{3650+4375\cdot7255}\)
= (7255+1).4375-725/3650+4375.7255
=7255.4375+1.4375-725/4375.7255+3650
=7255.4375+4375-725/4375.7255+3650
=7255.4375+3650/4375.7255+3650
=1
Tính nhanh, tính hợp lý
347.22-22(216+184):8
\(\dfrac{7256\cdot4375-725}{3650+4375\cdot7255}\)
a) Ta có: \(347\cdot2^2-2^2\left(216+184\right):8\)
\(=347\cdot4-4\cdot400:8\)
\(=1388-200=1188\)
7256 x 4375 -725 / 3650 + 4375 x 7256
7256*4375-725/3650+4375*7255
7256*4375-725/3650+4375*7255
= 7256 * 4375 + 4375 * 7255 - 29/146
= 4375* ( 7256+7256) -29/146
= 4375* 14512 -29/146
= 63490000- 29/146
7256 . 4375 - 725 / 3650 + 4375 . 7256
Ai nhanh mk tick
Cái / là phần
Đề bài là tính bằng cách hợp lý
7256 . 4375 - \(\frac{725}{3650}\) + 4375 . 7256
= (7256 . 4375 - 4375 . 7256) + \(\frac{725}{3650}\)
= 0 + \(\frac{725}{3650}\)
= \(\frac{725}{3650}\)
7256*4375-725
3650+4375*7255
7256 x 4375 - 725
= 31745000 - 725
= 31744275
3650 + 4375 x 7255
= 3650 + 31740625
= 31744275
#)Giải :
\(\frac{7256.4375-725}{3650+4375.7255}=\frac{\left(7255+1\right)4375-725}{3650+4375.7255}=\frac{7255.4375+4375.1-725}{3650+4375.7255}=\frac{7255.4375+3650}{3650+4375.7255}=1\)
7256x4375-752
=31745000-752
=31744275
3650+4375x7255
=3650+31740625
=31744275
7256+4375-725/3650+4375-7255
7256 x 4375 - 725
3650 + 4375 x 7255
7256 * 4375 - 725 = 31745000 - 725 = 31744275
3650 + 4375 * 7255 = 3650 + 31740625 = 31744275
OK