5 kg x 9 kg + 5 kg
=5 kg x (9kg + 1 kg)
=5kg x 10 kg
=50 kg
7x6-7x5
=7x(6-5)
=7x1
=7
49x11-49
=49x(11-1)
=49x10
=490
590:10=59
5 kg x 9 kg + 5 kg = 5 kg x 10 = 50 kg
7 x 6 - 7 x 5 = 7 x ( 6 - 5 ) = 7
49 x 11 - 49 = 49 x 10 = 490
590 : 10 = 59
1. 5 kg * 9 kg + 5kg
= 5 kg * [ 9 kg +1 kg]
=5 kg *10 kg
= 50 kg
2. 7 *6 - 7 * 5
= 7 * [ 6 - 5 ]
= 7 * 1
= 7
3. 49 * 11 - 49
= 49 * [ 11 - 1 ]
= 49 * 10
= 490
4. 590 / 10
= 59
tk mình nha bạn
5 kg x 9 kg + 5 kg=
45kg +5kg= 50kg
7x6-7x5=
7 x( 6 - 5 )=
7x 1 =7
49 x 11 - 49=
49 x 11 - 49 x 1=
49 x (11-1) =
49 x 10= 490
590:10=59
tk mk nha
5kg.9kg+5kg
=5.(9+1)kg
=5.10kg
50kg
7.6-7.5
=7.(6-5)
=7.1=7
49.11-49
=49.(11-1)
=49.10
=490
590:10=59
