a)\(37.24+37.76+63.79+63.21=37.\left(24+76\right)+63.\left(79+21\right)\)
\(=37.100+63.100\)
\(=\left(37+63\right).100\)
\(=100.100\)
\(=10000\)
b)\(27.\left(13+48\right)+27.\left(22+17\right)=27.\left(13+48+22+17\right)\)
\(=27.100\)
\(=2700\)
Woa,cảm ựn bạn nha,may quá mk làm đúng rồi
Bài 1:
A, 37.24+37.76+63.79+63.21
=37.(24+76)+63.(79+21)
=37.100+63.100
=(37+63).100
=100.100
=10000
B) 27.(13+48)+27.(22+17)
=27.(13+48+22+17)
=27.100
=2700
A) 37.24+37.76+63.79+63.21
=37.(24+76)+63.(79+21)
=37.100+63.100
=3700+6300
=10000
B)27.(13+48)+27.(22+27)
=27.61+27.49
=27.(61+49)
=27.110
=2970