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= 9,6x 45,6 + 9,6 x 531 + 9,6 x 1,3
= 9,6x ( 45,6 + 531 + 1,3)
= 9,6x 557,9
= 5547,84
9,6 x 45,6 + 3,2 x 531 x 3 + 4,8 x 1,3 x 2
= 9,6 x 45,6 + (3,2 x 3) x 531 + (4,8 x 2) x 1,3
= 9,6 x 45,6+ 9,6x 531+ 9,6x1,3
= 9,6 x (45,6+531+1,3)
= 9,6 x 557,9
= 5547,84
9,6+4,8*50+9,6*74
=9,6+4,8*2*25+9,6*74
=9,6+9,6*25+9,6*74
=9,6*(1+25+74)
=9,6*100
=960
5.7*16.2+16.2*4.3-6.2*4.8+6.2*5.2=(5.7*16.2+16.2*4.3)-(6.2*4.8+6.2*5.2)=16.2(5.7+4.3)-6.2(4.8+5.2)=16.2*10+6.2*10=10(16.2-6.2)=10
13.4+12.3+11.2+10.4-11.5-12.6-0.4=(13.4+12.3+11.2+10.4)-(11.5+12.6+0.4)=47.3-24.5=22.8
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\(\frac{16,2.3,7+5,7.16,2-7,8.4,8-4,6.7,8}{11,2+12,3+13,4-12,6-11,5-10,4}\)
\(=\)\(\frac{16,2\left(3,7+5,7\right)-7,8\left(4,8-4,6\right)}{\left(11,2+12,3+13,4\right)-\left(12,6+11,5+10,4\right)}\)
\(=\)\(\frac{16,2.9-7,8.0,2}{36,9-34,5}\)
\(=\)\(\frac{145,8-1,56}{2,4}\)
\(=\)\(\frac{144,24}{2,4}\)
\(=\)\(60,1\)
\(\text{Học tốt!!!}\)
tính nhanh : 16, 2 x 3,7 +5,7 x 16,2 - 7,8 x 4,8 - 4,6 x 7,8 / 11,2 + 12,3 +13,4 - 12,6 - 11,5- 10,4
\(=\dfrac{16.2\cdot9.4-7.8\cdot9.4}{2,4}=\dfrac{8.4\cdot9,4}{2,4}=32.9\)
=16,2 x ( 5,7 + 3,7 ) - 6,2 x ( 4,8 + 4,6 ) / ( 13,4 - 0,4 ) + ( 12,3 + 11,2 - 11,5 ) - ( 10,4 + 12,6)
=16,2 x 9,4 - 6,2 x 9,4 / 13 + 12 - 23
=152,28 - 58,28 / 2
= 94/2
=47
\(\frac{5,7\times16,2+16,2\times3,7-6,2\times4,8-6,2\times4,6}{13,4+12,3+11,2-10,4-11,5-12,6-0,4}\)
=\(\frac{16,2\times\left(5,7+3,7\right)-6,2\times\left(4,8+4,6\right)}{\left(13,4-0,4\right)+\left(12,3+11,2-11,5\right)-\left(10,4+12,6\right)}\)
=\(\frac{16,2\times9,4-6,2\times9,4}{13+\left(23,5-11,5\right)-23}\)
=\(\frac{9,4\times\left(16,2-6,2\right)}{13+12-23}\)
=\(\frac{9,4\times10}{2}\)
=\(\frac{94}{2}\)
=47
`9,6 xx 12,3 + 4,8 xx 25,4 - 4,8 xx 50 + 30`
`= 4,8 xx 24,6 + 4,8 xx 25,4 - 4,8 xx 50 + 30`
`= 4,8 xx ( 24,6 + 25,4 - 50 )+30`
`= 4,8 xx 0+30`
`=30`