13,25:0,5+13,25:0,25+13,25:0,125+13,25x6
=13,25x2+13,25x4+13,25x8+13,25x6
=13,25x(2+4+8+6)
=13,25x20
=265
13,25:0,5+13,25:0,25+13,25:0,125+13,25x6
=13,25x2+13,25x4+13,25x8+13,25x6
= 13,25x(2+4+8+4)
=13,25x20
=265
Tính nhanh:
13,25 : 0,5+ 13,25 : 0,25 + 13,25 : 0,125 + 13,25 x 6
= 13,25 : ( 0.5 + 0.25 + 0.25) + 13.25 × 6
= 13.25 / 1 + 13.25 * 6
= 13.25 + 13.25 * 6
= 13.25 * ( 6+ 1 )
= 13.25 * 7
=92.75
Nhớ k nha <<
=13,15x2+13 25x4+13,25x8+13,25x6
=13,25x(2+4+8+6)
=13,25x20=265
tinh nhanh
4,86x0,25x40
= 185,5 nhé bạn