c, 28,35: 0,125 + 42,65: 0,125 + 1:0,125

= (28,35 + 42,65 + 1) : 0,125

= 72 : 0,125

= 72 x 8

= 576

a, 1,25 x 10,8 x 0,8:0,9

= (1,25 x 0,8) x (10,8 :0,9)

= 1 x 12

= 12

1,25 x 10,8 x 0,8 : 0,9 

=1,25 x 0,8  x 10,8 : 0,9

= 1  x 12

=12

=(1,25.0,8).10,8.0,9 con lai tu tinh 

dau cham la dau nhan nha

tui hoc lop 6

6: \(9,5\times4,7+9,5\times4,3+9,5\)

\(=9,5\times\left(4,7+4,3+1\right)\)

\(=9,5\times10=95\)

5: \(32\times1,25\times2,5+0,476+0,524\)

\(=80\times1,25+1\)

=100+1

=101

4: \(3,5\times0,5+3,5\times0,125+3,5\times22,5\times4\)

=3,5x(90+0,5+0,125)

=3,5x90,625

=317,1875

3: \(32\times1,25\times2,5+\frac{54}{10}\times8,7+5,4\times3,3-10,8\)

\(=40\times2,5+5,4\times8,7+5,4\times3,3-5,4\times2\)

=100+5,4x(8,7+3,3-2)

=100+5,4x10

=100+54

=154

2: \(15,25\times0,5+15,25\times0,25+15,25\times0,125+15,25\times6\)

=15,25x(0,5+0,25+0,125+6)

=15,25x6,875

=104,84375

1: 2020x0,56+0,34x6060+8080x0,85+2020x5,02

=2020x0,56+2020x1,02+2020x3,4+2020x5,02

=2020x(0,56+1,02+3,4+5,02)

=2020x10

=20200

Ta có: \(1,25\times10,8\times0,8:0,9\)

\(=1,25\times0,8\times10,8:0,9\)

\(=1\times12=12\)

5,4 * 6,3 + 5,4 * 5,7 - 10,8

= 5,4 * 6,3 + 5,4 * 5,7 - 5,4 * 2

= 5,4 * ( 6,3 + 5,7 - 2 )

= 5,4 * ( 12 - 2 )

= 5,4 * 10

= 54

5.4*(6.3+5.7)-10.8

5.4*12-10.8

64.8-10.8

54.8

45.136

281.232

12.65625

45,136

281,232

12,65625

10,8 x 0,10 + 10,8 : 10 + 0,100 x 10,8

= 10,8 x (0,1 + 0,1 + 0,1)

= 10,8 x 0,3

= 3,24

T biết m là ai nhe, xài acc thằng Mon làm j-?