0,24 x 450 + 0,8 x 15 x 3 + 3 x 3 x 8
= 0,24 x 450 + 0,24 x 150 + 0,24 x 300
= 0,24 x ( 450 + 150 + 300 )
= 0,24 x 900
= 216
Toán lớp 5 dễ mà ! Thui ! ~ nyan ! Bây giờ T-I-C-H cho mik nhá !!!!
0.24*150*3+0.8*15*3+3*3*8=3(36+7.5+24)=3*67.5=202.5
=0,24 x 450 + 0,08 x 3 x 15 x 10 + 0,03 x 8 x 3 x100
=0,24 x 450 + 0,24 x 150 + 0,24 x 300
=0,24 x ( 450+150+300)
=0,24x900
=216
0,24 x 450 +0,8x15x3+3x3x8
=0,24 x 450 +0,8x0,3x10x15 + 3x24
=0,24 x 450 +0,24 x150 + 3x0,24 x100
=0,24 x (450+150 +3x100)
=0,24 x 900
=216
dễ hiểu hơn chưa ??
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