a) \(5.4+5.6=5.\left(4+6\right)\)
\(=5.10=50\)
b)\(7.2+7.8=7.\left(2+8\right)\)
\(=7.10=70\)
a) 5 . 4 + 5 . 6
= 5 . ( 4 + 6 )
= 5 . 10
= 50
b) 7 . 2 + 7 . 8
= 7 . ( 2 + 8 )
= 7 . 10
= 70
a) 5 x 4 + 5 x 6
= 5 x ( 4 + 6 )
= 5 x 10
= 50
b) 7 x 2 + 7 x 8
= 7 x ( 2 + 8 )
= 7 x 10
= 70
a) 5.4+5.6=5.(4+6)=5.10=50
b,7.2+7.8=7.(2+8)=7.10=70
chúc bạn học tốt
a) 5.4 + 5.6
= 5.(4+6)=5.10=50
b) 7.2+7.8 = 7.10 = 70
a)5.4 + 5.6
= 5.(4 + 6)
= 5.10
= 50
b) 7.2 + 7.8
= 7. (2+8)
= 7.10
= 70
a)5.4+5.6
=5.(4+6)
=5.10
=50
b)7.2+7.8
=7.(8+2)
=7.10
=70
a) 5.4+5.6
=5.(4+6)
=5.10
=50
b) 7.2+7.8
=7.(2+8)
=7.10
=70
