4.25*(57.43+42.57)-325

=4.25*100-325=425-325=100

4,25x57,43-325+42,57x4,25

=(4,25x57,43+42,57x4,25)-325

=4,23x(57,43+4,57)-325

=4,25x100-325

=425-325

=100

k cho mik nha,chúc bạn học tốt

mình Nghĩ là:

4,25x57,43-325+42,7X4,25=4,25x(57,43+42,57)-325

                                            =4,25x100-325

                                            =425-325

                                            =100

Tham khảo:

4,25x57,43-325+42,57x4,25

=(4,25x57,43+42,57x4,25)-325

=4,23x(57,43+4,57)-325

=4,25x100-325

=425-325

=100

4,25x57,43-325+42,57x4,25

=(4,25x57,43+42,57x4,25)-325

=4,23x(57,43+4,57)-325

=4,25x100-325

=425-325

=100

325+50+325+49+325

=325x3+50+49

=975+50+49

=1025+49

=1074

1074 nha bn

\(325+50+325+49+325\)

\(=\left(325.3\right)+50+49\)

\(=975+99\)

\(=1074\)

4*325*25 - 5*325*20 

=325*100 -  100 * 325 

=325 * (100-100)

=325 * 0

=0 

k mik nha ^_^ 

(237*98+248+248)+(127- 102-127-127)  

134415-134415:45

=134415-2987

=131428

134415 - 134415 : 45 = 134415 - 2987

                                   = 131428

325 * 1574 - 325 * 325 - 325 * 249 = 325 * ( 1574 - 325 - 249 )

                                                       = 325 * 1000

                                                       = 325000

2 * 8 * 50 * 25 * 125 = ( 2 * 50 ) * 125 * ( 8 * 25 )

                                = 100 * 125 * 200

                                = 12500 * 200 

                               = 2500000

2 * 3 * 4 * 5 * 50 * 25 = ( 2 * 50 ) * ( 5 * 4 ) * ( 4 * 25 ) * 3 

                                  = 100 * 20 * 100 * 3

                                  = 100 * ( 20 * 3 )

                                  = 100 * 60

                                  = 6000

325 x 1574 -325 x 325 - 325 x 249= 325 x ( 1574-325-249)=325 x 1000= 325000

2 x 8 x 50 x 25 x 125 = ( 2 x 50) x ( 8 x 125) x 25 = 100 x 1000 x 25=2500000

2 x 3 x 4 x 5 x 50 x 25 = ( 2 x 50) x ( 25 x 4) x (3 x 5)=100 x 100 x 15 =150000

k cho mình nha!!!

1. (2 x 5) x 7 x 4 = 280

1. ( 2 x 5 ) x (7 x 4)

=     10  x  28

=      280

2.   ( 32 x  3) x (20 x 5 ) 

=           96 x 100

=                 9600.

3.  ( 12 x 7) x ( 25 x 4)

=         84 x 100

=            8400.

Bạn tự làm các phép tính còn lại nhé!

Cảm ơn Yến nha!

\(\text{ 325.(– 24) + 24. 225}\)

\(=-325.24+24.225\)

\(=24.\left(-325+225\right)\)

\(=24.-100\)

= \(-2400\)

học tốt

a)=234(1257-257)

=234.1000

=234000

b)=524(1327-327)

=524.1000

=524000

c)=325(1574-325-24)

=325.1225

=398125

d)=175(1274-273-1)

=175.1000

=175000

234x (1257-257)= 234 x 1000 = 234000

1327 x 524 - 524 x 327 = 524 x (1327 - 327 ) = 524 x 1000 = 524000

325x1574 - 325 x 325 -325 x24 =325 x(1574 - 325 - 24 )= 325 x 1225 =398125

175 x 1274 - 175 x273 -175 = 175 x (1274 - 273 -1) = 175 x 1000= 175000

                 kkk mk nha bạn !!!!!!!!

a)234 x 1257 - 234 x257

= 234 x (1257 - 257)

= 234 x 1000

= 234000

b)1327 x 524 - 524  x327

= 524 x (1327 - 327)

=524 x 1000

=524000

c)325 x 1574 - 325 x325 - 325 x24

= 325 x (1574 -325 - 24)

=325 x 1225

=325 x 1000+325 x 100 +325 x125

=325000+32500+40625

=390125

d)175 x 1274 - 175 x 273 - 175

=175 x (1274-273-1)

=175 x 1000

=175000

\(=\dfrac{16\left(48+24+28\right)}{8+8}=48+52=100\)