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999 945 467 x 33 = 32 998 200 411 sai nha bn kết quả phải bằng 32998207011
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a: 1/3=8/24
b: 2/7=14/49<14/30
c: 15/35=3/7
d: 8/32=2/8
e: 10/20=100/200
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a) 72 + 20 = 92
68 – 40 = 28
350 + 30= 380
970 – 70 = 900
b) 411 + 300 = 7811
625 + 200 = 825
954 – 400 = 554
367 – 300 =67
c) 32 + 7 + 8 = (32+8)+7=40+7=47
54 + 7 + 3 = 54 + (7+3)= 54+10=64
1 + 16 + 9 = (1+9)+16=10+16=26
96 + 40 + 4 = (96+4)+40=100+40=140
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15 x 5 x 3 x ( 18 x 32 - 8 x 32 - 10 x 32 )
= 15 x 5 x 3 x { 18 - 8 - 10 } x 32 }
= 15 x 5 x 3 x 0
= 0
Vì số nào nhân với 0 cx bằng 0
15 x 5 x 3 x ( 32 x (18-8-10)
15 x 5 x 3 x(32 x 0 )
15 x 5 x 3 0 = 0
h nha
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\(\dfrac{13}{2}=\dfrac{13x5}{2x5}=\dfrac{65}{10}\)
\(\dfrac{11}{40}=\dfrac{11x25}{40x25}=\dfrac{275}{1000}\)
\(\dfrac{32}{5}=\dfrac{32x2}{5x2}=\dfrac{64}{10}\)
\(\dfrac{21}{250}=\dfrac{21x4}{250x4}=\dfrac{84}{1000}\)
\(\dfrac{1}{200}=\dfrac{1x5}{200x5}=\dfrac{5}{1000}\)
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Sau khi lấy ra lần đầu thì còn:
\(56200:\dfrac{2}{3}=84300\left(lít\right)\)
Lúc đầu có:
84300+32850=117150(lít)
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64 x X + X + 32 x X + X x 3 = 805
(64+1+32+3) x X = 805
100 x X = 805
X = 805: 100
X = 8,05
2008 x 68 + 32 x 2008
= 2008 x (68 +32)
= 2008x100= 200800
64 x X + X + 32 x X + X x 3 = 805
X x ( 64 + 1 + 32 + 3 ) = 805
X x ( 65 + 35 ) = 805
X x 100 = 805
X = 805 : 100
X = 8,05
2008 x 68 + 32 x 2008
= 2008 x ( 68 + 32 )
= 2008 x 100
= 200800
\(32\left(200+3\right)=32\cdot200+32\cdot3=6400+96=6496\)