a) 425 x 3475 + 425 x 6525
= 425 x (3475 + 6525)
= 425 x 10000
= 4250000
b) 175 x 1274 - 175 x 273 - 175
= 175 x 1274 - 175 x 273 - 175 x 1
= 175 x (1274 - 273 - 1)
= 175 x 1000
= 175000

\(174x1274-175x273-175\)

\(=221676-47775-175\)

\(=173726\)

173726 nhé bạn ê

175 x 1274 - 273 x 7 x 25 - 100 -75

=175 x 1274 - 273 x (7 x 25) - 100 -75

= 175 x 1274 - 273 x 175 - 100 -75

= 175 x (1274 - 273) - 100 - 75

= 175 x 1001 - 100 - 75

= 175175 -100 - 75

= 175000

175*1274-273*7*25-100-75

=175*1274-273*175-175

=175*(1274-273-1)

=175*1000

=175000

Bài làm

10000 - 47 x7 - 47 x 28

=47x(10000-28)-7

=47x9942-7

=467274-7

=467267

# Chúc banj học tốt #

      \(10000-47\text{ x }7-47\text{ x }28\)

\(=10000-47\text{ x }\left(7+28\right)\)

\(=10000-47\text{ x }35\)

\(=10000-1645\)

\(=8355\)

1000 - 47 . 72 - 47 .28

= 47 . ( 1000 - 72 -28 )

= 47 .0

=0

3457 - 27 . 48 - 48 .73 + 6543

=3457 - 48 . (27 + 73 ) + 6543

= 3457 - 4800 + 6543

= 5200

10000 - 47 × 72 - 47 × 28

= 100 × 100 - 47 × (72 + 28)

= 100 × 100 - 47 × 100

= 100 × (100 - 47)

= 100 × 53 = 5300

\(2b,\)\(54\times47-47\times53-20-27.\)

\(=47\times54-47\times53-47\)

\(=47\times\left(54-53-1\right)\)

\(=47\times0=0\)

\(2c,\)\(10000-47\times72-47\times28\)

\(=100\times100-47\times\left(72+28\right)\)

\(=100\times100-47\times100\)

\(=100\times\left(100-47\right)\)

\(=100\times53=5300\)

2b

54 x 47 - 47 x 53 - 20 - 27 = 47 x ( 54 - 53 ) - 20 - 27 = 47 - 20 - 27 = 47 - ( 20 + 27 ) = 47 - 47 = 0

2c

10000 - 47 x 72 - 47 x 28 = 10000 - 47 x ( 72 - 28 ) = 10000 - 47 x 44 = 10000 - 2068 = 7932

Ggqgqgqgqggqgqg

` 10000 – 47 xx 72 – 47 xx 28 `
`=10000-47xx(72+28)`
`=10000-47xx100`
`=100xx100-47xx100`
`=100xx(100-47)`
`=100xx53`
`=5300`

`10 000 - 47 xx 72 - 47xx28`

`=10 000 - 47 xx(72+28)`

`=10 000 - 47xx100`

`=10 000 - 4700`

`=5300`