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1.25 ∶ 0.5 ∶ 0.2 x 8
=(1,25 x 8)x (0,5 x 2)
=10 x 1
= 10
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132 : ( 0,125 + 0,25 - 0,2 + 0,5 + 1)
= 132 : 1,675
= 78,80
132: 0,125 + 132: 0,25 - 132: 0,2 + 132: 0,5 + 132
= 132 \(\times\) 8 + 132 \(\times\) 4 - 132 \(\times\) 5 + 132 \(\times\) 2 + 132 \(\times\) 1
= 132 \(\times\) ( 8 + 4 - 5 + 2 + 1)
= 132 \(\times\) ( 12 - 5 + 3)
= 132 \(\times\) ( 7 + 3)
= 132 \(\times\) 10
= 1320
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1/90:0.25+1/90:0.5+1/90:0.125-1/90:0.1
= 1/90 x 4 + 1/90 x 5 + 1/90 x 2 + 1/90 x 8 - 1/90 x 10
= 1/90 x ( 4+5+2+8-10)
= 1/90 x 9
= 1/10
k nha!Cảm ơn nhiều!
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20.18 x 89 + 20.18 x 0.2 + 20.18 x 0.5 + 20.18 x 0.25
= 20.18 ( 89 + 0.2 + 0.5 + 0.25 )
= 360 . 89,95
= 32382
Ủng hộ ae ơiii
20.18 x 89 + 20.18 x 0.2 + 20.18 x 0.5 + 20.18 x 0.25
= 20.18 x ( 89 + 0.2 + 0.5 + 0.25)
= 2018 x 89.95
= 1815.191
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48/41 + 45/27 + 34/28 + 37/23 - 18/27 - 6/28 - 7/41 - 14/23
= (48/41 - 7/41) + (45/27 - 18/27) + (34/28 - 6/28) + (37/23 - 14/23)
= 1 + 1 + 1 + 1
= 4
37 x 2 + 45 x 5 + 3 x 18 = 74 + 225 + 54
= 353