Tính nhanh \(\frac{64\times50+44\times100}{27\times38+146\times19}\)
\(\frac{64\times50\times44\times100}{27\times38\times146\times19}\)
nhìu dợ chi bằng bấm máy hay hơn đó
Tính nhanh 64*50 +44*100gach ngang 27*38+146*19
Tính nhanh: 64 nhân 50 cộng 44 nhân 100/ 27 nhân 38 cộng 146 nhân 19
\(\frac{64X50+44X100}{27X38+146X19}=\frac{64X50+44X2X50}{27X2X38+146X19}=\frac{64X50+88X100}{54X38+146X19}=\frac{50X\left(64+88\right)}{19X\left(54+146\right)}=\frac{50X152}{19X200}\)\(=\frac{̸5̸̸0X152}{19X4X̸5̸0}=\frac{152}{76}=2\) Đáp số :2
tính nhanh: 64 x 50 + 44 x 100 phần 27 x 38 + 146 x 19 .
64x100+50x44
=2200+6400
=8600
1026+2774
=3800
mình làm đúng ko vậy
TL:
= 3800
nhé
K CHO MK NHAAAAAAA
BNNNNNNNNNNNNNNNNNNNNNNNNNN
~~HT~~
TL:
64x100+50x44
=2200+6400
=8600
1026+2774
=3800
HT
b, \(\frac{64\text{ x }50+44\text{ x }100}{27\text{ x }38+146\text{ x }19}\)
TÍNH NHANH
Ai đúng thì tick
\(\frac{64\cdot50+44\cdot100}{27\cdot38+146\cdot19}\)
\(\frac{32\cdot100+44\cdot100}{27\cdot38+73\cdot38}\)
\(\frac{\left(32+44\right)\cdot100}{\left(27+73\right)\cdot38}\)
\(\frac{56\cdot100}{100.38}\)
\(\frac{56}{38}\)
\(\frac{28}{19}\)
k mình nha
Tính nhanh :
a) 64 * 50 + 44 * 100 / 27 * 38 + 146 * 19
b) ( 456 * 11 + 912 ) * 37 / 13 * 74
Đề bài : Tính nhanh
a, \(\frac{637\text{ x }527-189}{526\text{ x }637+448}\) b, \(\frac{64\text{ x }50+44\text{ x }100}{27\text{ x }38+146\text{ x }19}\)
a) \(\frac{637\times527-189}{526\times637+448}\)
\(=\frac{637\times\left(526+1\right)-189}{526\times637+448}\)
\(=\frac{637\times526+637-189}{526\times637+448}\)
\(=\frac{637+526+448}{526\times637+448}\)
\(=1\)
b) \(\frac{64\times50+44\times100}{27\times38+146\times19}\)
\(=\frac{50\times\left(64+44\times2\right)}{19\times\left(27\times2+146\right)}\)
\(=\frac{50\times\left(64+88\right)}{19\times\left(54+146\right)}\)
\(=\frac{50\times152}{19\times200}\)
\(=\frac{152}{19\times4}\)
\(=\frac{38}{19}\)
\(=\frac{2}{1}\)
\(=2\)
tính nhanh: 64 x 50 + 44 x 100
__________________
27 x 38 + 146 x 19
a. 64 x 50 + 44 x 100
= 32 x 2 x 50 + 44 x 100
= 32 x 100 + 44 x 100
= (32 + 44) x 100
= 76 x 100
= 7600
b. 27 x 38 + 146 x 19
= 27 x 38 + 73 x 19 x 2
= 27 x 38 + 73 x 38
= (27 + 73) x 38
= 100 x 38
= 3800
a/b = 7600/3800 = 2
\(64\times50+44\times100\)
\(=32\times2\times50+44\times100\)
\(=\left(32+44\right)\times100\)
\(=76\times100=7600\)
64x50+44x100
=32x2x50+44x100
=32x(50x2)+44x100
=32x100+44x100
=(32+44)x100
=76x100
=7600
A = ( 100 * 44 + 50 * 64 ) * ( 37414,8 : 1000 + 2242,52 : 100 )
B = ( 16 * 14,96 * 25 ) * ( 27 * 38 + 19 * 146 )
Hãy tính A : B
Cho A = (100·44 + 50·60)·(37414,81000 + 2242,52100)
B = (16·14,96·25)·(27·38 + 19·146)
A = (100·44 + 50·2·30)·(3741,48·1100 + 2242,52·1100)
A = 100.(44 + 30).(3741,48 + 2242,52)·1100
A = 7400·5984·1100 A = 74·5984
B = (16·14,96·25)·(27·38 + 19·146)
B = (4·4·14,96·25)·(27·2·19 + 19·146)
B = 100·4·14,96 + 19.(146 + 54)
B = 1496·4 + 19·200
B=5984*19*200
==>AB=5984*745984*19*200
AB=7419*200
AB=3719*100(giảm hai vế đi hai lần)
=>A;B=37/1900
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