3457 - 27 x 48 - 48 x 73 + 6543

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

= 10000 - 48 x (27 + 73)

= 10000 - 48 x 100

= 10000 - 4800

= 5200

Ủng hộ mk nha ^_-

kết quảlà 5200 nhé

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

=10000 - 48 x (27 + 73)

= 10000 - 48 x 100

=10000 - 4800

= 5200

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

đơn giản mà

3457-(27.48)-(48.73)+6543=5200

có ai giúp mk không

bài này hình như ra sai đề pn ạ

^_^

a/ 1000 - 47 x 72 - 47 x 28

= 1000 - 47 x (72 + 28)

= 1000 - 47 x 100

= 1000 - 4700

= -3700

b/ 3457 - 27 x 48 - 48 x 73 + 6543

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

= (3457 + 6543) - 48 x 100 

= 10000 - 4800

= 5200

k mk nha, mk trả lời đầu tiên đấy

Tính nhanh:

a) 0,125 + 21,075 + 88,36 + 9,875 + 78,925 + 11,64

= \((0,125+9,875)+(21,075+78,925)+(88,36+11,64)\)

= \(10+100+100\)

= \(210\)

b) 3457 - 27 . 48 - 48 . 73 + 6543

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

\(= 10000 - 48 . (27 + 73) \)

\(= 10000-48.100\)

\(= 10000 - 4800\)

\(= 5200\)

c) (792,81. 0,25 + 792,81 0,75). (11. 9 – 900 . 0,1 - 9)

= [ 792,81 . ( 0,25 + 0,75 ) ] . ( 99 - 90 - 9 )

= [ 792,81 . 1 ] . ( 9 - 9)

= 792,81 . 0

= 0

a) \(\left(145\times99+145\right)-\left(143\times102-143\right)\)

\(=\left[145\times\left(99+1\right)\right]-\left[143\times\left(102-1\right)\right]\)

\(=\left(145\times100\right)-\left(143\times101\right)\)

\(=14500-14443\)

\(=57\)

b) \(54\times47-47\times53-20-27\)

\(=47\times\left(54-53\right)-20-27\)

\(=47-20-27\)

\(=0\)

c) \(10000-47\times72-47\times28\)

\(=10000-47\times\left(72+28\right)\)

\(=10000-47\times100\)

\(=10000-4700\)

\(=5300\)

d) \(3457-27\times48-48\times73+6543\)

\(=\left(3457+6543\right)-48\times\left(27+73\right)\)

\(=10000-48\times100\)

\(=10000-4800\)

\(=5200\)

a) 8.427.3 + 6.573.4

= 8.3.427 + 6.4.573

= 24.427 + 24.573

= 24.(427 + 573)

= 24.1000

= 24000

b) 6.1235.20 - 5.235.24

= 6.20.1235 - 5.24.235

= 120.1235 - 120.235

= 120.(1235 - 235)

= 120.1000

= 120000

c) 3457 - 27.48 - 48.73 + 6543

= (3457 + 6543) - (27.48 + 48.73)

= 10000 - 48.(27 + 73)

= 10000 - 48.100

= 10000 - 4800

= 5200

Ủng hộ mk nha ^_-

= 5200

tick cho mk nhé

a) 10000 - 47 . 72 - 47 . 28

= 10000 - 47 ( 72 - 28 )

= 10000 - 47 . 44

= 10000 - 2068

= 7932

b) 3457 - 27 . 48 - 48 . 73 + 6543

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

= 3457 - 48 . ( - 75 ) + 6543

= 3457 - ( - 27 ) + 6543

= 3457 + 27 + 6543

= 10027

a, 10000-47×72-47×28

= 10000-47(72+28)

=10000-47×100

=10000-4700= 5300