49 x (37+25) + 62 x (121- 60)

= 49 x 62 + 62 x 61

= 62 x (49+61)

=6820

49*(37+25)+62*(121-60)

=49*62+62*61

=62*(49+61)

=62*110

=6820

a. 37. 38 + 62. 37

= 37 . (38 + 62)

= 37 . 100

= 3700

b. 28. 64 + 28. 36

= 28 . (64 + 36)

= 28 . 100

= 2800

a, 568 + 568 x 135 - 568 x 36

= 568 x ( 1 + 135 - 36)

= 568 x 100

56 800

b, 17 x 49 + 49 x 37 + 54 x 26 + 54 x 25

=  49 x ( 17 + 37) + 54 x ( 26 + 25 )

= 49 x 54 + 54 x 51

= 54 x ( 49 + 51)

= 54 x 100

= 5 400

c,   14 x 35 x 5 + 10 x 25 x 7 + 20 x 70

 =    ( 2 x 35) x ( 7 x 5)  + ( 10 x 7) x 25 + 20 x 70

= 70 x 35 + 70 x 25 + 20 x 70

= 70 x ( 35 + 25 + 20)

= 70 x 80

= 5 600 

a) 568 + 568 x 135 - 568 x 36

= 568 x ( 1+1+135-1-36 )

=568 x 100

=5680

b) 17 x 49 + 49 x 37 + 54 x 26 + 54 x 25

= 49 x ( 17 + 37 ) + 54 x ( 26 + 25 )

= 49 x 54 + 54 x 51

= 54 x ( 49 + 51 )

= 54 x 100

= 5400

c) 14 x 35 x 5 + 10 x 25 x 7 + 20 x 70

= 70 x 35 + 10 x 25 x 7+ 20 x 70

= 70 x 35 + 250 x 7 + 20 x 70

= 70 x 35 + 70 x 25 + 20 x 70

= 70 x (35+25+20)

= 70 x 80

= 5600

xin hãy giúp mik ik

giúp chúng mình ik, chúng mình hứa sẽ tick hết cho những ai trả lời đầu tiên và đúng nhất

\(A=\left(100\times44+50\times60\right)\times\left(37414,8:1000+2242,52:100\right)\)

\(A=\left(4400+3000\right)\times\left(3741,48\times\frac{1}{100}+2242,52\times\frac{1}{100}\right)\)

\(A=7400\times\left[\frac{1}{100}\times\left(3741,48+2242,52\right)\right]\)

\(A=7400\times\frac{1}{100}\times5984\)

\(A=74\times5984\)

\(B=\left(16\times14,96\times25\right)\times\left(27\times38+19\times146\right)\)

\(B=\left(4\times4\times25\times14,96\right)\times\left(27\times19\times2+19\times146\right)\)

\(B=\left(4\times100\times14,96\right)\times\left[19\times\left(54+146\right)\right]\)

\(B=4\times1496\times19\times200\)

\(B=5984\times19\times200\)

Ta có:

 \(\frac{A}{B}=\frac{74\times5984}{5984\times19\times200}\)

\(\frac{A}{B}=\frac{37}{19\times100}\)

\(\frac{A}{B}=\frac{37}{1900}\)

Bài hơi dài, nếu có chỗ nào sai sót thì bạn thông cảm nhé

Cho \(A=\left(100\cdot44+50\cdot60\right)\cdot\left(\frac{37414,8}{1000}+2242,\frac{52}{100}\right)\)

\(B=\left(16\cdot14,96\cdot25\right)\cdot\left(27\cdot38+19\cdot146\right)\)

\(A=\left(100\cdot44+50\cdot2\cdot30\right)\cdot\left(3741,48\cdot\frac{1}{100}+2242,52\cdot\frac{1}{100}\right)\)

\(A=\left\{100.\left(44+30\right)\right\}.\left\{\left(3741,48+2242,52\right)\cdot\frac{1}{100}\right\}\)

\(A=7400\cdot5984\cdot\frac{1}{100}\)

\(A=74\cdot5984\)

\(B=\left(16\cdot14,96\cdot25\right)\cdot\left(27\cdot38+19\cdot146\right)\)

\(B=\left(4\cdot4\cdot14,96\cdot25\right)\cdot\left(27\cdot2\cdot19+19\cdot146\right)\)

\(B=100\cdot4\cdot14,96+\left\{19.\left(146+54\right)\right\}\)

\(B=1496\cdot4+19\cdot200\)

\(B=5984\cdot19\cdot200\)

=>\(\frac{A}{B}=\frac{5984\cdot74}{5984\cdot19\cdot200}\)

\(\frac{A}{B}=\frac{74}{19\cdot200}\)

\(\frac{A}{B}=\frac{37}{19\cdot100}\)( Vì giảm 200 : 2 = 100 . Lấy 74 :2 = 37 . Giảm 2 vế đi 2 lần )

=> A : B = 37/1900

Mình đã thử lại đúng nha bạn !

dài lắm bạn ơi

mình ko biết

Ta có:

49 x 62 + 38 x 73 + 31 x 51 x 2 + 19 x 27 x 2

= 49 x 62 + 38 x 73 + 62 x 51 + 38 x 27

= 62 x ( 49 + 51 ) + 38 x ( 73 + 27 )

= 62 x 100 + 38 x 100

= ( 38 + 62 ) x 100

= 100 x 100

= 10 000

49x62+38x73+31x51x2+19x27x2

= 3038+2774+3162+1026

=10000

k cho mk nha bn!                    :)

a: \(32684+41325+316+675\)

\(=\left(32684+316\right)+\left(41325+675\right)\)

\(=33000+42000=75000\)

b: \(25\cdot18\cdot4\cdot2\)

\(=18\cdot2\cdot\left(25\cdot4\right)\)

\(=36\cdot100=3600\)

c: \(19\cdot81+19+18\cdot19\)

\(=19\left(81+1+18\right)\)

\(=19\cdot100=1900\)

^{A, 32684 + 41325 + 316 + 675}

^{=(32684+316)+(41325+675)}

=33000+42000

=75000

^{B, 25 x 18 x 4 x 2}

^{=(25x4)x(18x2)}

^=100x36

⁼³⁶⁰⁰

^{C, 19 x 81 + 19 + 18 x 19}

=19x(81+18+1)

=19x100

=1900