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`2.24.25 + 3.41.16 + 6.2.8.17`
`= 48*25 + 48*41 + 48*2*17`
`= 48*(25+41+2*17)`
`= 48*(66+34)`
`= 48*100 `
`= 4800`
2.24.25 + 3.41.16 + 6.2.8.17
= ( 2.24 ).25 + ( 3.16 ).41 + ( 6.8 ) + ( 2.17 )
= 48 . 25 + 48 .41 + 48 . 34
= 48. ( 25 + 41 + 34 )
= 48 . 100
= 4800
2x18x14+3x12x17+4x31x9
=36x14+36x17+36x31
=36x(14+17+31)
=36x62
=2232
2x18x14+3x12x17+4x31x9
=36x14+36x17+36x31
=36x(14+17+31)
=36x62=2232.
Tính nhanh: 123,45 + 23,56 + 76,44 + 54,55
= (123,45 + 54,55) + (23,56 + 76,44)
= 178 + 100
=278
3.18.25 + 3.41.16 + 6.2.8.17
= 3.18.25 + 3.16.41 + (6.8).(2.17)
= 48.25 + 48.41 + 48.34
= 48.(25 + 41 + 34)
= 48.100
= 4800
\(\frac{2^{10}\cdot13+2^{10}\cdot65}{2^8\cdot104}\)
\(=\frac{2^{10}\cdot\left(13+65\right)}{2^8\cdot13\cdot8}\)
\(=\frac{2^{10}\cdot78}{2^8\cdot13\cdot8}\)
\(=\frac{2^{10}\cdot13\cdot2\cdot3}{2^8\cdot13\cdot2\cdot4}\)
\(=\frac{2^2\cdot3}{4}\)
\(=3\)
\(=\frac{2^{10}x\left(13+65\right)}{2^8x104}\)
\(=\frac{2^8x2^2x78}{2^8x104}\)
\(=\frac{4x78}{104}\)
\(=\frac{312}{104}=3\)
\(2.24.25+3.31.16+6.2.8.17\)
\(=48.25+48.31+48.34\)
\(=48.\left(25+31+24\right)\)
\(=48.90\)
\(=4320\)
=48*25+48*31+48*34
=48(25+31+34)
=48*90=4320