![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 19 x 64 + 76 x 34 = 19 x 64 + 19 x 4 x 34 = 19 x (64 + 4 x 34) = 19 x 200 = 3800
b) 35 x 12 + 65 x 13 = 35 x 12 + 65 x 12 + 65 = 12 x (35 + 65) + 65 = 12 x 100 + 65 = 1265
c) 136 x 68 + 16 x 272 = 136 x 68 + 16 x 2 x 136 = 136 x (68 + 16 x 2) = 136 x 100 = 13600
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(19.64+76.34\)
\(=1216+2584\)
\(=3800\)
Mình chỉ biết thế thôi !
![](https://rs.olm.vn/images/avt/0.png?1311)
b) 35 x 24 + 35 x 76 +55 x 19 +55 x 91
= 35 x ( 24 + 76 ) + 55 x ( 19 + 91 )
= 35 x100 +55 x 100
= 100 x ( 55 + 35 )
= 90 x 100 =9 000
c) \(6\cdot25\cdot4+4\cdot19\cdot6-2\cdot14\cdot12\)
\(=24\cdot25+24\cdot19-24\cdot14\)
\(=24\left(25+19-14\right)\)
\(=24\cdot30=720\)
d) \(19\cdot64+76\cdot34\)
\(=76\cdot19+76\cdot34\)
\(=76\left(19+34\right)=76\cdot53=4028\)
a) 2 x 16 x 50 x 25
= ( 2 x 50 ) x ( 16 x 25 )
= 100 x 400
= 40 000
![](https://rs.olm.vn/images/avt/0.png?1311)
a ) 32.( - 64 ) - 64.68
= - 64 x ( 32 + 68 )
= -64 x 100
= -6400
b ) - 54.76 + 12 (.-76) - 76.(-34)
= 76 x ( - 54 + -34 + 12 )
= 76 x (-76 )
= (-5776)
c ) 19 - 42.(-19) + 38 x 5
= 42 x ( 19 + - 19 ) + 38 x 5
= 42 x 0 + 38 x 5
= 0 + 38 x 5
= 38 x 5
= 190
=)
a) 32 . ( -64 ) - 64 . 68
= ( 32 + 68 ) . ( - 64 )
= 100 . ( - 64 )
= ( - 6400 )
b) ( - 54 ) . 76 + 12 . ( - 76 ) - 76 . ( - 34 )
= 76 x ( -54 + -34 + 12 )
= 76 x ( - 76 )
= ( - 5776 )
c) 19 - 42 . ( -19 ) + 38 . 5
= 42 . ( 19 + -19 ) + 190
= 42 . 0 + 190
= 0 + 190
= 190
![](https://rs.olm.vn/images/avt/0.png?1311)
a)24.53+24.87+24.40
=24.(53+87+40)=24.180=(24.18).10
=432.10=4320
b)(19.4).16+76.34
=76.16+76.34
=76.(16+34)
=38.(2.50)
=38.100=3800
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có : 19 x 64 + 76 x 34
= 19 x 64 + 19 x 4 x 34
= 19 x 64 + 19 x 136
= 19 x (64 + 136)
= 19 x 200
= 3800
19 x 64 + 76 x 34
= 38 x 32 + 38 x 68
= 38 x ( 32+68)
= 38 x 100
3800
![](https://rs.olm.vn/images/avt/0.png?1311)
a. 19.64 + 76.34 = 19.64 + 19.4.34 = 19.64 + 19.136 = 19.(136 + 64) = 19.200 = 3800
b. 35.12 + 65.13 = 35.12 + 65.(12 + 1) = 35.12 + 35.12 + 65 = (35 + 65).12 + 65 = 1200 + 65 = 1265
c. 136.68 + 16.272 = 136.68 + 16.136.2 = 136.68 + 136.32 = 136.(68 + 32) = 136.100 = 13600
d. (2 + 4 + 6 + ... + 100) x (36 x 333 - 108 x 111) = (2 + 4 + 6 + ... + 100) x 0 = 0
e. 19991999 x 1998 - 19981998 x 1999 = 1999 x 10001 x 1998 - 1998 x 10001 x 1999 = 0
a) 19 .64 + 76.34
= 19.64 + 19.4.34
= 19(64 + 4.34)
= 19.200 = 3800
b) 35.12 + 65.13
= 35.12 + 65.12 + 65
= 12(35 + 65) + 65
= 12.100 + 65 = 1265
c) 136.68 + 16.272
= 136.68 + 16.2.136
= 136(68 + 16.2)
= 136.100= 13600
d) ( 2 + 4 + 6 + ...... + 100 ).( 36 x 333 - 108 x 111 )
= ( 2 + 4 + 6 + ...... + 100 ).(36.3.111 - 108.1110
= ( 2 + 4 + 6 + ...... + 100 ).(108.111 - 108.111)
= ( 2 + 4 + 6 + ...... + 100 ).0 = 0
e ) 19991999 x 1998 - 19981998 x 1999
= 1999.10001.1998 - 1998.10001.1999 = 0
\(19\cdot64+76\cdot34\)
\(=19\cdot64+19\cdot4\cdot34\)
\(=19\cdot64+19\cdot136\)
\(=19\cdot\left(64+136\right)\)
\(=19\cdot200\)
\(=3800\)
19 x 64 + 76 x 34
= 38 x 32 + 38 x 68
= 38 x ( 32 + 68)
= 38 x 100
= 3800