tính nhanh: 123123/ 138138 x 464646/414141
tính nhanh
\(\dfrac{1919}{2323}x\dfrac{464646}{747474}x\dfrac{37}{19}\)
giúp mik nhó
\(=\dfrac{19}{23}\times\dfrac{23}{37}\times\dfrac{37}{19}=1\)
Tính A = 1919 / 2323 x 464646 / 747474 x 37 / 19
A=19/23x46/74x37/19
A=1x2x1/1x2x1
A=2/2
A=1
A = 1919/2323 x 464646/747474 x 37/19
A = 19/23 x 46/74 x 39/19
A = 19x46x37/23x74x19
A = 1
Vậy A = 1
tính bằng cách hợp lí
1919/2727 x 464646/747474 x 37/19
tính nhanh
763 x 28 + 1364 x 21 + 14 x 474 + 42 x 318 =............................................................................................................................................................................................................................................................................................................................................................................................................
312312/131131 x 524524/104104 =............................................................................................................................................................................................................................................................................................................................................................................................................
( 1 + 1/105 ) x ( 1 + 1/106 ) x ( 1/107 ) =....................................................................................................................................................................................................................................................................................................................................................................................................
143x14x30/35x78x44 =....................................................................................................................................................................................................................................................................................................................................................................................................
1919/2323 x 464646/747474 x 37/19 = ......................................................................................................................................................................................................................................................................................................................................................................................................
Tính bằng cách hợp lí nhất :
1919/2323 x 464646/747474 x 37/19 = ?
\(\dfrac{1919}{2323}\times\dfrac{464646}{747474}\times\dfrac{37}{19}\)
\(=\)\(\dfrac{1919:101}{2323:101}\times\dfrac{464646:10101}{747474:10101}\times\dfrac{37}{19}\)
\(=\dfrac{19}{23}\times\dfrac{46}{74}\times\dfrac{37}{19}\)
\(=\dfrac{19\times23\times2\times37}{23\times2\times37\times19}=1\)
123123+123123=.......
AI LAM NHANH TO TICH CHO
123.456456+546. 123123
Tính nhanh giúp mình với. Ai nhanh và đúng nhất mình tick
=123.456456+546546.123(123123:1001;546.1001)
=123.(456456+546546)
=123.1003002
=123369246
chưa chắc đây đã là tính nhanh nên bạn hãy cân nhắc trước khi làm theo
Tính bằng cách hợp lí nhất : 1919 /2323 x 464646/747474 x37/19
\(\frac{1919}{2323}.\frac{464646}{747474}.\frac{37}{19}\)
\(=\frac{19}{23}.\frac{46}{74}.\frac{37}{19}\)
\(=\frac{19.46.37}{23.74.19}\)
Sao khi giản ước, ta có:
\(=\frac{1702}{1702}=1\)
Nhớ ấn đúng cho mình nhé!
Tìm x
112112 . 123x = 123123 . 123
nhanh nha
123x=123(triet tieu 123123)
Vay x= 1
1001x112x123x=1001x123.x123
=> 112x=123 => x=123/112