TK:

c)338

\(\begin{array}{*{20}{c}}{a)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{536}\\{\,\,\,\,\,8}\end{array}}\\\hline{\,\,\,544}\end{array}\)                           \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{\,\,\,67}\\{829}\end{array}}\\\hline{\,\,\,\,996}\end{array}\)                            \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{432}\\{284}\end{array}}\\\hline{\,\,\,\,716}\end{array}\)

\(\begin{array}{*{20}{c}}{b)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{253}\\{\,\,\,\,\,7}\end{array}}\\\hline{\,\,\,\,246}\end{array}\)                     \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{561}\\{\,\,\,42}\end{array}}\\\hline{\,\,\,519}\end{array}\)                             \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{795}\\{638}\end{array}}\\\hline{\,\,\,\,057}\end{array}\)

a) 900 = 2^2 x 3^2 x 5^2

b) 675 = 3^3 x 5^2

c) 96573 = 3 x 32191

d) 123 456 789 = 3^2 x 3 607 x 3 803

e) 987 654 321 = 3^2 x 17^2 x 379 721

123456789= 3² * 3607 * 3803

987654321= 3² * 17² * 379721

\(2\)x\(4\)x\(8\)x\(5\)x\(25\)x\(125\)

=(2x5)x(4x25)x(8x125)

=10x100x1000

=1000000

2x4x8x5x25x125 = ( 2 x 5 ) x ( 4 x 25 ) x ( 8 x 125 )

     = 10 x 100 x 1000

      = 1000000

Chúc bạn học tốt và đạt điểm cao ❤

dễ mà đây là phép lớp 4 

62868:156=403

14892:73=204

12345:253=48(dư 201)

15683:124=126(dư 59)

1.

a) -[ -345 + 1234 - 2014] - (345 - 1234)

= 345 - 1234 + 2014 - 345 + 1234

= ( 345 - 345) + ( -1234 +1234) +2014

= 0 + 0 + 2014 = 2014

b) ( -31) . 47 + ( -31) . 52 + ( -31)

= (-31) . ( 47 + 52 +1)

= (-31) . 100 = -3100

c) 654 +{ 374 - [ 654 - ( +126)]}

= 654 + [ 374 -( 654 - 126)]

= 654 + ( 374 - 654 + 126)

= 654 + 374 - 654 + 126

= ( 654 - 654 ) + ( 374 + 126 )

= 0 + 500 = 500

mik tìm đc câu trả lời rùi điểm này là tặng cho bạn đã trả lời cho mik❤

472  +  219 = 691

865  -  398 = 467

346  x  3  = 1038

675  :  5 = 135

472 + 219 = 691

865 - 398 = 467

346 x 3  = 1038

675: 5 = 135

        Xong rồi nha !!

ai trả lời nhanh nhất đc tick nha

Bài 2: 

c: \(y:312=345:5\)

\(\Leftrightarrow y:312=69\)

hay \(y=21528\)

d: \(918670-y=251\cdot142\)

\(\Leftrightarrow y=91867-35642=56225\)