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Lời giải:
$20,18\times 8,5+20,18+20,18:2$
$=20,18\times 8,5+20,18\times 1+20,18\times 0,5$
$=20,18\times (8,5+1+0,5)=20,18\times 10=201,8$
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\(8.3+8.5+8.7+8.8+1.2+1.3+1.5+\)\(1.7\)
\(=\left(8.3+1.7\right)+\left(8.5+1.5\right)+\left(8.7+1.3\right)+\left(8.8+1.2\right)\)
\(=10+10+10+10\)
\(=10\)X \(4\)
\(=40\)
8,3 + 8,5 + 8,7 + 8,8 + 1,2 + 1,3 + 1,5 + 1,7
= (8,3 + 1,7) + (8,5 + 1,5) + (8,7 + 1,3) + (8,8 + 1,2)
= 10 + 10 + 10 + 10
= 40
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A ) 1,85 x 27 + 1,85 x 9 + 185: 0,25 - 0,185 x 500 + 18,5
= 1,85 x 27 + 1,85 x 9 + 1,85 x 100 x 4 - 1,85 : 10 x 500 + 1,85 x 10
= 1,85 x 27 + 1,85 x 9 + 1,85 x 100 x 4 + 1,85 x 10 - 1,85 x 50
= 1,85 x 27 + 1,85 x 9 + 1,85 x 400 + 1,85 x 10 - 1,85 x 50
= 1,85 x ( 27 + 9 + 400 + 10 - 50 )
= 1,85 x 396
= 732,6
mk k chắc nha
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4,02 x 4,75 + 2,01 x 8,5 + 4,02
=4,02 x 4,75+17,085+4,02
=19,095+17,085+4,02
=36,18+4,02
=40,2
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8,5 x ( 63 + 48 - 10 - 1 )
= 8,5 x 100
= 850
= 8,5 x ( 63 + 48 - 10 - 1 )
= 8,5 x 100
= 850