Question

tính nhanh

273-158-42

1057-457

7200 :6:12

1800:36

 

 

 

 

 

Answer 1

bạn nào biết thì giúp mình với mình đang càn gấp 

Answer 2

273-158-42 = 273 - ( 158 + 42 )

= 273 - 200

= 73

1057 - 457 = 600

7200 : 6 : 12 = 1200 : 12 = 100

1800 : 36 =50

Answer 3

\(273-158-42=73\)

\(1057-457=600\)

\(7200\div6\div12=100\)

\(1800\div36=410\)

Answer 4

273-158-42=273-(158+42)

=273-200

=73

1057-457=600

7200:6:12=1200:12=100

1800:36=50

Answer 5

1800 : 36 = 50

Answer 6

273 - 158 - 42 = 273 - (158 + 42 ) = 273 - 200 = 73

1057 - 457 = 1057 - 57 - 400 = 1000 - 400 = 600

7200 : 6 : 12 = 7200 : ( 6 x 12 ) = 7200 : 12 = 600

1800 : 36 = 1800 : 18 : 2 = 100 : 2 = 50

Answer 7

373 - 158 - 42 = 375 - ( 158 + 42 ) = 375 - 200 = 175

1057 - 457 = 600

7200 : 6 : 12 = 7200 : ( 6 x 12 ) = 7200 : 72 = 100

1800 : 36 = 50