a)39 . 213 + 87 . 39
=39 . (213 + 87 )
=39 . 300
= 11700
b)27 . 75 + 25 . 27 - 150
=27 . (75 + 25) - 150
=27 . 100 - 150
= 2700 - 150
= 2550
a) Ta có: \(39.213+87.39=39.\left(213+87\right)\)
\(=39.300\)
\(=11700\)
b) Ta có: \(27.75+25.27-150=27.\left(75+25\right)-150\)
\(=27.100-150\)
\(=2700-150\)
\(=2550\)
a) 39 . 213 + 87 .39
=39( 213+87)
=39 . 300
=39.3.100
=117 . 100
=11700
b) 27 . 75 + 25 . 27 -150
=27(75 + 25 ) - 150
=27 . 100 - 150
=2700 - 150
=2550
tích cho hộ cái
thank you everyone
a,39.213+87.39 =39.(213+87) =39.300 =11700
b, 27.75+25.27-150 =27.(75+25)-150 =27.100-150=2550